Not only does Tagamet HB prevent heartburn before it starts, but it also safely controls the production of stomach acid for hours and hours -- something antacids, such as Mylanta(R) and Maalox(R), can't claim.
A sedentary person just beginning circuit training that exercises three to four days a week at a moderate-intensity should begin to notice some initial improvement in aerobic endurance within one to three weeks, according to the American College of Sports Medicine.
Example: Five stations of 1-minute each repeated for six circuits adds up to a 30-minute workout. Step 2: Pick an upper-body exercise. The trick with circuit training is to use whatever you have handy. If you're at the gym, you have a wide range of options, but all you really need is your body.