you need to make sure you keep your spine/back in a flat neutral position when you work out. if you don't you risk placing pressure on the spinal nerves which could cause the tingling you describe. of course it's possible the tingling is a normal part of working out too. whenever a person works the legs the muscles should feel somewhat painful or even tingly afterwards. that indicates you stressed the muscles well. but if you start having tingling or numbness in your lower extremities you should first assess the position of your back when you're working out. wishing you well!
i have been having tingling in my legs while sitting and laying down the last few days. i just started seeing a trainer. for the last 4 days my legs have had this tingling in my legs. it only happens when i am sitting down or in bed. when i am moving i am fine. i went to the doctor 2 days ago and she did not seem too concerned. she just told me to get some blood work done to check my vitamin levels. my eating habits are getting better i am trying to loose 30 pounds. i just started to see a trainer. we did mostly leg exercises so maybe i pinched something? that would be the only thing i can think of.