Raheel, if you are asking what your daughter can do to have a healthy pregnancy, she can eat well and exercise as much as she already does, and avoid things that are bad for her such as cigarette smoke, alcohol, exposure to toxins, stress, and not enough sleep. Her doctor or midwife should be able to give her good advice on all of this. Pregnancy is a natural thing, the only risks are from illness or doing things that are bad for you anyway.