Running: It seems like the most natural way to get into better shape. Bodies are designed to run, right? Yes, but only bodies that are young and relatively lean. For older and generally heavier bodies, the repeated impact of running can cause real damage when you begin late in life. You take more than 2,000 strides per mile, and with each one, you land with a force equivalent to three to four times your body’s weight.
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Strength training differs from cardiovascular training. One involves aerobic training, whereas, the other involves working and strengthening your muscles. According to Wikipedia, strength training is “…a type of physical exercise specializing in the use of resistance to induce muscular contraction which builds the strength, anaerobic endurance, and size of skeletal muscles.”
Lie on your back with knees bent and feet flat on the floor. Raise your bent legs up so that your knees are stacked over your hips, keeping a 90-degree bend in your knees. Brace your core to press your low back into the floor; make sure to maintain this flat-back position throughout the entire exercise. With your palms facing each other, bring arms up to point toward the ceiling.