Are these suitable for doing exercises with extra weights? (abmachinesguide.com)
Unfortunately, swimming, which is another gentle form of exercise with other benefits, involves the water bearing on our weight rather than our bones. (reversediabetescoach.com)
During this time the beginner should be able to learn how to perform exercises with good form and range of motion, so he / she can now start working with heavier weights. (fitnessandpower.com)