The Fitness Influencer Boom: Why Everyone’s Piling In
Record gym memberships, Gen Z gym culture, billion-euro budgets: why everyone is betting on fitness influencers — and what brands and creators should do now.
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Why is everyone betting on fitness influencers right now? Because the audience itself is flooding into the gym: German fitness studios hit a record 12.36 million members in 2025 according to the industry association DSSV, Gen Z has turned training into its social center of gravity — and supplement, apparel and wearable brands are steering budgets toward the creators who shape that culture. Here’s our analysis of what is driving the boom, who is funding it, and what brands and creators should do with it now.
The foundation: Germany is training like never before
Fitness has gone from niche hobby to mass phenomenon in Germany. According to the benchmark study by the industry association DSSV, German fitness and health facilities counted a record 12.36 million members in 2025 — up 5.6% year over year — with net revenue reaching €6.25 billion (+7.4%). Add aggregators like Urban Sports Club and 13.83 million people train in gyms, roughly 16.5% of the population.
What matters for marketers is who is training: according to DSSV data, Gen Z’s gym membership rate has climbed from around 3.8% (2018) to 17.2% (end of 2024) — more than quadrupling in six years. Among millennials it stands at 23.4%, almost one in four. The US shows the same picture: according to the industry body HFA, 18-to-24-year-olds have the highest gym membership rate of any age group at 35.5%.
The boom extends beyond the gym floor: in 2025, 74,586 people finished a marathon in Germany according to analyses by running portal hdsports — the highest figure in roughly 20 years — and the 20-to-25 age bracket has nearly tripled compared with 2019.
In short: the most advertising-relevant audience spends its free time in the gym and on the running track — and marketing budgets always follow attention. You can find the full industry figures in the 2026 key data report on the German fitness industry by DSSV, Deloitte and DHfPG.
Gym over club: fitness is the new hangout
The boom isn’t just quantitative — it’s cultural. For Gen Z, the gym is increasingly replacing the bar and the club as a social space. According to Strava’s Year in Sport report, Gen Z would rather meet people while working out than at a bar by a factor of four, and run clubs grew 59% worldwide in 2024 — in 2025, running clubs on the platform even grew 3.5x year over year. In parallel, Gallup reports the lowest drinking rate among young US adults since it began measuring: between 2023 and 2025, the share of 18-to-34-year-olds who drink alcohol fell from 59% to 50%.
Three further shifts make the niche so valuable for brands:
- Fitness as a mental health strategy: in a survey by UK gym chain The Gym Group, 87% of Gen Z say training improves their mental health. Fitness content resonates far beyond building muscle.
- Women and strength training: in 2025, 21% more women than men logged strength training on Strava — an audience that classic bodybuilding brands ignored for decades.
- Wearables make fitness shareable: wearable technology tops the ACSM’s 2026 global fitness trend ranking, and according to Bitkom, 64% of 16-to-29-year-old Germans at least occasionally wear a smartwatch. Every workout produces data — and data produces content.
The result: fitness is permanently visible, documentable and shareable like almost no other hobby. Fitness creators sit exactly at that intersection — their content is motivation, instruction and buying advice all at once.
Who’s pumping money into the niche
Three money streams are feeding the boom, and they reinforce each other.
Supplements: the DACH showcase is The Quality Group (ESN, More Nutrition): according to media reports, revenue grew from around €198 million (2021) to roughly €800 million (2024), with the first billion-euro year expected for 2025 — majority-owned by private equity firm CVC and built on a network of, by its own account, more than 600 influencers. The engine behind it: personal discount codes, typically paying around 10% commission on code revenue according to research by trade outlet MedWatch. And the deals keep getting bigger: with the Raw Nutrition acquisition (April 2025), bodybuilding star Chris Bumstead even became a co-owner of the group.
Fitness fashion: Gymshark — the textbook influencer-built brand — reported record revenue of £646 million for fiscal 2025 and made Bumstead a shareholder in 2024, not just an athlete. Creator-founded labels are following: Oner Active, co-founded by fitness influencer Krissy Cela, nearly doubled revenue to £80.8 million in 2024 according to its published accounts.
Wearables and health brands: Whoop announced a $10.1 billion valuation in 2026 — with Cristiano Ronaldo as investor and global ambassador — Oura roughly doubled revenue to around $1 billion in 2025 according to media reports, and AG1 grew to around $600 million in annual revenue per company and media figures; marketing analyses put its podcast sponsorships alone at some $2.2 million per month, plus 20% affiliate commissions.
Add the tailwind of the overall market: German influencer ad spend stands at around €718 million in 2025 according to Statista, after averaging 22.7% annual growth between 2019 and 2024. Deal structures are visibly evolving too — from pure discount codes through hybrid models and long-term ambassadorships to equity stakes and fully creator-owned brands like Pamela Reif’s naturally pam.
What the boom means for brands
For brands, the fitness community is one of the most attractive audiences there is: according to McKinsey, Gen Z and millennials make up 36% of adults but drive over 41% of annual wellness spending — and fitness creators enjoy enormous trust in purchase decisions around training, nutrition and gear. The willingness to buy is demonstrably there; otherwise there would be no supplement groups with nine-figure revenues built on discount codes.
But the boom has side effects you need to price in:
- Discount-code fatigue: when every other fitness creator puts the same protein powder code in their caption, the credibility of every single code drops. Interchangeable ad faces don’t build your brand.
- Saturation in the generic: the thousandth workout-plan post doesn’t convert. What performs are collaborations with a clear niche and genuine product fit.
- Legal exposure: for supplements in particular, the EU Health Claims Regulation applies — health-related advertising claims are only permitted within narrow limits, and that includes what creators say on your behalf.
Our recommendation from 120+ campaigns since 2019: bet on a few carefully selected creators with genuine product fit rather than on as many codes as possible — and think in long-term partnerships instead of one-off posts. We show you what that looks like under influencer marketing; managed campaigns start at €5,000 with us. And because we represent creators in this niche ourselves — such as fitness creator Lilli (@lillimsr) with over 160,000 followers on TikTok — we know both sides of the negotiating table.
What the boom means for creators
The uncomfortable truth first: when the niche booms, so does the competition. It has never been easier to start making fitness content — and never harder to stand out with it. Generic gym content (“my push day”, “my transformation”) is virtually unlimited in 2026 and correspondingly interchangeable.
What works instead:
- Sub-niche beats generic: the growth segments are well documented — strength training for women, run clubs and beginner running, training as a mental health routine. If you credibly own one of these movements, you compete with hundreds of accounts instead of hundreds of thousands.
- Professionalism decides: brands compare very closely these days. Clean ad disclosure, verifiable insights and reliable delivery are the ticket into bigger deals.
- From code to contract: pure discount-code deals are the entry point, not the goal. As your reach grows, negotiate toward a base fee plus a performance share — and, long term, toward an ambassadorship. The biggest fitness creators today are shareholders or brand founders, not ad faces.
The market supports it: according to market analysts, the global sports influencer market is projected to nearly quadruple by 2033. If you want to set up your collaborations professionally — from pricing to negotiation — take a look at our page for creators.
Fitness deal models at a glance
| Deal model | Typical structure | Fits | What to watch |
|---|---|---|---|
| Discount code / affiliate | Commission on code revenue, industry standard roughly 5–15% | Nano and micro creators, performance-driven brands | Clean tracking; factor in code inflation across the niche |
| Hybrid (fee + performance) | Base fee plus revenue or conversion bonus | Micro to mid-tier creators | Put KPIs and bonus logic in writing up front |
| Long-term ambassadorship | Annual contract with fixed content commitments | Mid-tier and macro creators, brand building | Fix exclusivity, duration and usage rights contractually |
| Equity / co-ownership | Shares instead of, or on top of, a fee | Top creators with a long-standing brand relationship | Only with legal counsel; a very long-term commitment |
| Creator-owned brand | Creator founds or co-owns a product line | Established creators with a strong community | Operational risk and capital needs sit with the creator |
Commission ranges per industry analyses (typically 5–15%; individual brands pay up to 20%); actual terms vary widely with reach, exclusivity and product category.
Frequently asked questions about the fitness boom
Why are so many brands betting on fitness influencers right now?
Brands are betting on fitness influencers because reach, purchasing power and willingness to buy converge in this niche like almost nowhere else: German gyms hit a record 12.36 million members in 2025 according to DSSV, and the training audience spends disproportionately on wellness products according to McKinsey. Fitness creators reach these people at exactly the moment training plans, nutrition and gear get decided.
Add the visible proof that it works: supplement groups like The Quality Group built nine-figure revenues largely through creator marketing. That success attracts further budgets — German influencer ad spend has been growing at double-digit rates for years according to Statista.
How much does a fitness influencer cost?
Fitness influencers fundamentally cost what their reach tier dictates: nano influencers (1,000–10,000 followers) run €50–250 per post, micro (10,000–50,000) €250–1,500, mid-tier (50,000–250,000) €1,500–5,000, macro (250,000–1 million) €5,000–15,000, and mega influencers (1 million+) from €15,000.
The fitness-niche twist: many deals are hybrid or purely performance-based — instead of, or on top of, a flat fee, creators earn a commission on discount-code revenue, typically around 5–15%. Fully managed campaigns including creator selection and contracts start at €5,000 with us — just reach out via our contact page.
Is the fitness niche oversaturated?
There is no shortage of demand — but there is a shortage of differentiation. The number of people training keeps growing according to DSSV, and brands are raising budgets; at the same time, more new fitness creators are entering the market than ever. What is saturated is generic content: the interchangeable workout plan, the umpteenth supplement recommendation.
Whoever credibly owns a growing sub-niche instead — say, strength training for women or the run-club movement — still finds open ground. For brands, the mirror image applies: it’s not the biggest fitness account that wins, but the one with the best fit between product and audience.
Which platform works best for fitness content?
TikTok for reach, Instagram for community and collaborations, YouTube for depth — the strongest fitness creators run at least two of them. TikTok’s discovery logic delivers the fastest organic reach for short training and transformation formats, Instagram remains the home of collaborations and community building, and YouTube carries long formats like training philosophy, nutrition and vlogs.
One fitness-specific extra: platforms like Strava turn training itself into a social network — run clubs and shared workouts create visibility beyond the classic feeds. For brands, what matters in the end is less the platform and more the question of where your audience actually makes its buying decisions.
What do supplement brands need to watch legally in influencer campaigns?
Two areas: ad disclosure and health claims. Commercial creator posts must be recognizable as advertising — that is standard in every niche. Specific to supplements, the EU Health Claims Regulation applies on top: health-related statements about foods and supplements are only permitted if they are explicitly authorized.
Importantly, this also covers what creators say on your behalf. Wording like “cures” or “burns fat” in a creator video can fall back on the brand. Brief your creators explicitly on permitted statements — and have claims legally reviewed when in doubt; this article is no substitute for legal advice.