Effects of Sauna on the Body
Sauna causes controlled hyperthermic stress (body temperature increase of 1-2°C). This activates heat shock proteins (HSP), which protect cells from damage, improve protein structure maintenance and reduce inflammation. For athletes, this means faster recovery and lower risk of injury.
📊 Sauna Types
| Type | Temperature | Humidity | Features |
|---|---|---|---|
| Finnish sauna | 80-100°C | Low (10-20%) | Dry heat, can pour water on stones for a brief humidity spike |
| Steam bath (Russian) | 60-80°C | High (50-70%) | Moist heat, feels more intense, penetrates the respiratory tract better |
| Infrared sauna | 50-60°C | Low | Heats the body directly, not the air. Better tolerance for beginners |
| Steam room (hammam) | 40-50°C | Very high (100%) | Gentler, moisturizes the skin, suitable for the respiratory tract |
🏋️ 6 Benefits of Sauna for Athletes
- Heat shock proteins (HSP): Sauna heat activates HSP production — proteins that "repair" damaged cell structures. This accelerates recovery after training.
- Growth hormone secretion: 2 x 15 min. in the sauna at 80°C can increase growth hormone. The effect is even greater if the sauna is combined with a cold shower.
- Cardiovascular adaptation: Heart rate in the sauna rises to 120-150 k/min — similar to moderate-intensity cardio training. This improves heart endurance.
- Muscle relaxation: Heat relaxes tense muscles, improves tissue elasticity and reduces the risk of injury.
- Improved blood circulation: Peripheral vasodilation increases blood flow to muscles, accelerating nutrient delivery.
- Detoxification through sweat: Although most detoxification is performed by the liver and kidneys, sweating helps eliminate heavy metals (lead, cadmium, arsenic).
⏱️ Sauna Protocols for Athletes
🔹 After training (for recovery)
10-15 min. in the sauna at 80-90°C, then 2-3 min. cold shower. Repeat 2-3 times. Finish with a cold shower. Do not use immediately after strength training — wait 1-2 hours.
🔹 Before training (for warm-up)
5-10 min. in the sauna at 70-80°C. Then — dynamic stretching. Sauna before training improves muscle elasticity and reduces the risk of injury.
🔹 On rest days (for health)
20-30 min. over several sessions, with breaks for a cool shower. Total time in the sauna — 30-45 min. per session.
🔹 Heat acclimation
1-2 weeks before competition in a hot climate: daily 15-20 min. in the sauna at 80-90°C. This improves thermoregulation and reduces the risk of heat stroke.
💧 Hydration — A Critical Factor
During one 15 min. sauna session, 0.5-1 liter of fluid is lost through sweat. Over an entire sauna session (3-4 rounds) — 1.5-3 liters! Dehydration is not only dangerous to health but also significantly reduces athletic performance.
Hydration protocol:
- Before sauna: 500-750 ml of water over 1-2 hours before sauna
- During sauna: 200-300 ml during each break between sessions
- After sauna: 500-1000 ml of water during the first hour. Best with electrolytes (sodium, potassium, magnesium)
🛒 Recommended Products
❓ Frequently Asked Questions
Does sauna help lose weight?
Weight lost during sauna is almost entirely water, which will return after rehydration. However, regular sauna use is associated with better metabolic health and may indirectly aid weight control through improved insulin sensitivity.
How many times per week can you go to the sauna?
For healthy athletes, 3-5 times per week is optimal. In Finnish studies, the greatest benefit was observed with sauna use 4-7 times per week. However, start with 2-3 times and monitor how you feel.
Does sauna after training interfere with muscle growth?
Unlike cold, heat therapy does not have a negative effect on muscle protein synthesis. However, it is recommended to wait 1-2 hours after strength training so that the body first performs natural recovery.