Increased Exercise & Night Sweats


Exercise affects the activity of the glands responsible for producing hormones -- and increased exercise may be causing sleep hyperhidrosis, also known as night sweats. If you find yourself waking up with perspiration, sometimes even needing to change pajamas or bedding, then your exercise routine may be the culprit.

Exercise and Hormones

  • Exercise causes a change in hormone levels in the body. One particular gland affected by exercise is the thyroid hormone. Intense exercise increases the amount of thyroid hormone circulating in the body, even hours after you finish exercising. When levels of thyroid hormone are elevated, the body's metabolism also increases. If you exercise at a higher intensity, the changes in hormone levels can lead to bouts of night sweats, especially if you've just changed your training regimen.

Intense Exercise in the Evening

  • Your body needs time to adjust from a high-intensity workout to lying down in the evening, but many people choose to exercise before they go to sleep. Exercising too close to your bedtime may be the reason why you're experiencing night sweats. High-intensity exercise, in particular, stimulates your cardiovascular system, which requires a few hours to return to normal functioning. Consider changing your workout routine or performing low-intensity exercise to avoid this cause of night sweats.

The Cause and the Cure

  • One of the ways to prevent night sweats, surprisingly, is also exercise. Lower-intensity exercises such as yoga and Pilates help to balance hormone levels and can help prevent night sweats from occurring. Walking and other low-intensity workouts can also be helpful in maintaining fitness without contributing to sweating during sleep. Performing intense exercises in the morning or earlier in the day instead of the evening may be a beneficial change.

Lifestyle Measures

  • In addition to changing your exercise routine, you may also be able to prevent night sweats through a few simple changes to your bedtime routine. Keeping your bedroom fairly cool can be a preventative measure. You may also notice beneficial changes by sleeping in cotton fabrics that breathe or keeping a glass of cool water by the bed to keep hydrated.

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