Hello!
Initially give a 48 hour break to the muscle group you are exercising with. You can exercise the same group of muscles on alternate days.
Always take a fruit platter, a glass of juice or milk shake or a bowl of cereal couple of hours before exercising to provide you with energy.
Always workout with a trainer to avoid these complications and go very slow and increase your intensity and workout times gradually and progressively.
Take care!
Are you taking an creatine supplements? If so this can cause cramping. Muscle cramps are caused by your body not having enough potassium. Eating bananas and staying very hydrated is important. Abs are typically okay to work out every day, but you need to alternate upper and lower body to give arms and legs a chance to rest. Make sure you are stretching before and after exercise as well and getting in a good warm up and cool down! Good luck!