Hi Natalie, Thanks for writing in to Healthcare Magic! Too much of a good thing is also bad! Probably you are new to exercise. You should start at slow pace and build up slowly to give your body time to acclimatize. Exercise in sudden bursts, and too much work out can lead to heat stroke, myoglobbinuria, acute kidney injury to name a few well known complication. So go slow about exercising, take rest for coming two days, take tab. Crocin for pain as required and take lots of liquids orally to keep good urine flow. Take care! If you have any further query please let me know I would try to answer it for you. Wish you a great health!