Weight training is a good way to keep valuable muscle mass through pregnancy and will help you get your pre-pregnancy body back quicker because your metabolism will be stronger. A healthy, safe range for beginners and experienced exercisers is 3- to 10-lb. dumbbells. Remember that pregnancy isn’t the time to increase your intensity or fitness level. It’s important to be safe and not push heavy amounts of weight (particularly over your head) or hold your breath while lifting. Always be supported by a bench or chair, especially as you get larger and your balance is altered (remember what happened Humpty Dumpty?).