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Caution a sauna suit retains your body heat and thus can expose you to high temperatures. Take the same precautions you would if using a sauna or exercising in hot weather. Avoid prolonged use if you become hot. Be sure to drink liquids during and after exercise to avoid dehydration. You should consult your physician before using this product or any new exercise program to determine if you have any physical limitations that could create a safety or health risk.