Lifting for two! A prenatal strength building full body workout. A great momma-to-be routine to continue to build up strength. This workout is great to do during your 2nd and 3rd trimesters. A workout that strengthens your entire body. All you need is a chair or bench and some free weights. Strength training workouts like this one are great to help mommas stay strong and healthy during pregnancy, aid in labor, and be helpful once the little one arrives.