Maybe. I suspect it has more to do with baseline activity level and type of workout, but I could be wrong. I only have 1 body. IME, If I do nothing all day, I'll feel sluggish all day. If I take a 30 minute walk or do some squats, pullups or overhead presses, it will get my heart rate up and I'll feel more awake afterwards. I generally don't push myself to the point of exhaustion with exercise.