WHAT IS SAUNA (HEAT THERAPY)?
Sauna use is exposure to heat in a heated room or cabin, often for relaxation or as part of a recovery routine.
WHAT IT MEANS
Sauna use is a form of passive heating: the environment heats the body without the muscular work of exercise. Traditional and infrared saunas use different heating methods, so findings from one setup may not apply to another.
A PRACTICAL EXAMPLE
Sitting in a sauna after a workout adds heat exposure to the session; it does not add another strength workout.
IMPORTANT LIMITS
Studies linking regular sauna use with better heart health do not prove that sauna caused those outcomes. Heat also adds physical stress and can cause dehydration or overheating. Health conditions and medicines can affect tolerance.
FREQUENTLY ASKED QUESTIONS
Does sauna replace exercise?
No. A higher heart rate or more sweating does not make sitting in heat equivalent to strength or aerobic training.
RELATED READING
SOURCES
Finnish observational cohort
exercise-plus-sauna randomized trial
coronary-disease sauna randomized trial
heat-illness safety review