Overdoing excercises

Definitely! Most especially if you're not really an active person. Three hours of work out in a day is too much. Usually 30 minutes to an hour will do. Our body can only take so much punishment.

It can if you are unaware of the complications that can occur if you don't ease your way into any routine and you work towards something that is real and that does not set you backward meaning that you are getting fitter and more healthier and not the other way round.

yeah i believe so pad. too much of everything is bad, even vitamins, and so is exercise. i used to have a gym mate who works out twice a day, once in the morning and another in the afternoon and she spends more than 2 hours every sessions (because at our gym the use in unlimited). and to top it off, she only ate pureed blanched vegetables. she dropped weight in just a short time. the problem is , she looked pale and unhealthy. well, i didn't see her anymore. i wonder what happened to her. she was really losing weight fast. and body mass as well, because her behind flattened, and so her chest. lol