1. The Difference between Heat Exhaustion and Heatstroke. ... Both heat exhaustion and heatstroke are caused by exercising or playing in a hot, humid environment where the body becomes dehydrated. However, they show different combinations of symptoms.
2. This is why it is always recommended to increase your weight or reps on your exercises as your body gets stronger. You will plateau very quickly if the weight or reps aren't increased. An intense routine can be done up to 12 weeks without needing a change.