Sports physicians know only too well that in our modern industrial society there are two extremes: people who throw themselves into sport with excessive ardor and are as achievement oriented in their free time as they are in their work, and people who have too little exercise.
Both extremes have a negative effect on testosterone levels. Strenuous physical exercise (e.g. running a marathon) lowers the testosterone levels just as much as physical inactivity.

Even if a diagnosed testosterone deficiency is treated with a testosterone therapy the treatment should always be supplemented by an individual exercise and fitness program.

Scientists have shown that regular aerobic exercise is the best way to improve physical performance and mental balance.

A properly designed strength training program prevents muscle loss and builds up muscle strength. Strength training is particularly effective in increasing testosterone levels.

Any exercise program must be tailored to your personal physical condition. If you are taking up physical exercise for the first time or after a long period of inactivity you should consult a doctor first and start under the supervision of a qualified instructor.