Use the heaviest weight possible! The little 2-3 lb. pink plastic weights in those Jane Fonda videos should be tossed in the trash, along with those 1980′s leg warmer/headband sets. Invest in a set of solid, well-constructed dumbbells with ample room for weight increases or better yet, a good set of resistance bands that offer a variety of resistance levels (we always recommend BodyLastics). Please remember that the body needs time to adjust to the exercise. Don’t start from the heaviest weight possible right away. Always warm-up and listen to your body, building up to heavier resistance levels carefully and responsibly. Contrary to popular belief, you can work long or you can work hard, but you cannot do both. Choose a resistance for your working sets that stresses your muscles to work hard. Just do it safely!