Swimming, running and bicycling, are all great exercises that you can do as the summer begins, to make you look good, all over, and make you feel better too.   You should start slowly if you haven’t been active.  Be sure to warm up and stretch your muscles gently before doing about 30 minutes of some simple exercises.  Any exercise that works the thigh muscles works the muscles of the rear end, as well.  If you touch your toes, slowly and then hold them for a count of three, and repeat this exercise for 10 turns, you have made a gentle start to your program.  Hold on to the back of a chair, and then lift your left leg out to the side for a count of 10 and then your right leg, in the same manner and do this 10 times on each side.  Be sure to hold your stomach muscles in while you breathe slowly in and out.  Then do the same amount of knee bends, and you will be ready of a steady walk of about 15 minutes.  Each time you do your work out try to add a few minutes to it, three times a week.  Holding light weights when walking will increase your firmness, and burn more calories.  If you don’t have time to walk, then look on the net for simple sit ups, thrusts and stretching exercises that you can do to firm up and feel fit.  Keeping your portions of food, about the size of your fist, and your activity level up, is a great way to look good and feel fantastic.