Should You Open a Gym or a Sauna in 2026?

Which is The Better Business Opportunity for Entrepreneurs in 2026?

If you're looking to start a wellness business, one question comes up repeatedly: should you open a gym or a sauna?

Both industries are built around helping people improve their health. Both attract customers willing to spend on wellbeing. But from an entrepreneur's perspective, they are fundamentally different businesses with very different startup costs, operating models and profit potential.

For many first-time founders and experienced investors alike, the numbers increasingly point in one direction.

Startup Costs: A Sauna Business Is Far More Accessible

One of the biggest barriers to opening a gym is the capital required.

Even a modest independent gym can require £200,000 to £500,000 once you factor in commercial premises, leasehold improvements, strength and cardio equipment, changing facilities, reception areas and working capital. Larger premium gyms often require significantly more.

A commercial sauna business, by comparison, can be launched for a fraction of that investment.

Many entrepreneurs begin with:

• A mobile wood-fired sauna
• A converted container sauna
• A standalone outdoor sauna cabin
• A compact urban sauna studio

A professionally built commercial sauna typically costs £12,000 to £20,000, making the barrier to entry dramatically lower than opening a traditional gym.

That lower initial investment also means entrepreneurs can reach profitability sooner while carrying considerably less financial risk.

Running Costs: Simpler Operations Mean Better Margins

Running a gym is expensive.

Typical ongoing costs include:

• Equipment maintenance
• Regular equipment replacement
• Cleaning large facilities
• Reception staff
• Personal trainers
• Sales teams
• High business rates
• Large commercial rents
• Significant electricity usage

Most gyms also require long opening hours, often from early morning until late evening.

A sauna business operates very differently.

Commercial saunas require relatively little maintenance, minimal equipment servicing and significantly fewer staff. One or two team members can comfortably manage multiple sessions throughout the day.

Energy consumption is also surprisingly modest. A traditional electric sauna used regularly often costs only tens of pounds per month in electricity, depending on heater size, local tariffs and usage patterns.

The result is a leaner operating model with lower fixed costs and stronger gross margins.

Revenue Per Square Metre

Space is expensive.

Gyms require hundreds—sometimes thousands—of square metres filled with equipment that generates revenue only when occupied.

Saunas generate substantially more income from much smaller footprints.

A single sauna seating 10 to 15 guests can run multiple sessions every day, creating high revenue density without rows of expensive equipment.

Many successful operators also increase average transaction value by offering:

• Cold plunge therapy
• Breathwork sessions
• Guided sauna rituals
• Memberships
• Private hire
• Retail products
• Food and drink

Each additional service increases customer spend without requiring substantially more floor space.

Customer Behaviour: Wellness vs Fitness

One of the biggest commercial differences lies in customer psychology.

Gym memberships are often driven by appearance-based goals:

• Lose weight
• Get fitter
• Build muscle
• Prepare for summer

These motivations can fluctuate throughout the year. January is traditionally the strongest month, while cancellations often increase as motivation fades.

Sauna customers are increasingly motivated by ongoing wellbeing rather than short-term fitness goals.

Regular users often visit because they experience improvements in:

• Stress management
• Sleep quality
• Recovery after exercise
• Mental wellbeing
• Relaxation
• Social connection

Many also follow growing research into the links between regular sauna bathing and cardiovascular health, creating habits that are easier to maintain over the long term.

For entrepreneurs, recurring habits generally produce stronger customer retention than seasonal motivation.

The Market Opportunity

The UK's fitness industry remains a substantial market worth approximately £5 billion annually, but competition has become intense.

Budget chains, 24-hour operators and low-cost memberships continue to place pressure on independent gyms.

By contrast, the UK's sauna market is still relatively young.

Across Britain, entrepreneurs are opening:

• Community sauna clubs
• Coastal sauna experiences
• Contrast therapy studios
• Luxury wellness venues
• Boutique urban saunas
• Mobile event saunas

Consumer demand continues to grow as heat therapy becomes increasingly mainstream and wellness spending shifts towards recovery and preventative health.

Industry forecasts suggest the wider UK spa and wellness market is expected to expand significantly over the coming decade, creating favourable conditions for specialist sauna operators.

Which Business Makes More Sense?

Every business depends on location, execution and management.

A well-run gym can be highly successful.

Equally, a poorly managed sauna business will struggle.

However, when comparing the business models side by side, saunas offer several clear advantages for entrepreneurs:

• Lower startup costs
• Lower operating expenses
• Smaller premises
• Simpler staffing requirements
• Higher revenue per square metre
• Strong membership potential
• Growing consumer demand
• Less direct competition in many local markets

For founders looking to enter the wellness sector without committing hundreds of thousands of pounds, a sauna business represents one of the most attractive opportunities available in 2026.

As Britain's wellness economy continues to evolve, entrepreneurs who build authentic community-focused sauna experiences may find themselves entering a market that is still in its early stages of growth—while many areas of the traditional gym industry have already reached maturity.