The single pulley and the double pulley lat pulldown are exercises performed on special cable weight machines. The technique you choose to perform the exercises is different depending on how the machine is set up; however, both techniques target and work the same muscles.

Exercising with a kidney infection might relieve pain for you once you start undergoing medical treatment. Physical activity releases endorphins in your body, which are the body’s natural pain killers. Not all exercises, however, are good for the back pain you experience with a kidney infection.

Back dimples, or Venus dimples, are desirable indentations on either side of the spine just above the butt. Back dimples are caused by a visible cleft in the sacroiliac joint and are widely believed to be genetic. However, a high percentage of lean athletes sport Venus dimples.

What exactly is the Australian push-up, and how does it compare to its cousin, the pull-up? Let's see how they stack up.

An annular tear is a serious medical condition in which the annulus, a ring-shaped ligament surrounding your spinal discs, is subjected to too much pressure and rips.

If your back is aching and tired, weak muscles may be to blame. The erector spinae are muscles that run along the spine and are the primary muscles that help you rise back up when you bend over. With an inactive lifestyle, these muscles become weak, which puts you at risk for back strain.

The straight-arm pulldown isn't seen that often in the gym, but those in the know rely on it to add back width. It is an isolation movement, meaning that only one joint is mobile, and while it works several of the same major muscle groups as the pullup, it removes biceps from the equation.

The barbell upright row primarily targets the front and side shoulder muscles, but it also works the biceps, rotator cuff muscles, and the lower and middle traps. Although an effective strength-training exercise, the barbell upright row is not the best option for some.

"The deadlift is a very productive exercise. One of two or three core exercises that a routine should be built around," according to personal trainer Scott Carrell, wrtiting for the University of Washington.

The deadlift is often considered an exercise that targets your hamstrings, glutes, lower back and core muscles, but it is also great for hitting your forearms, traps, rhomboids and lat muscles.

Runners, athletes and yogis all risk straining their adductor muscles by overusing them. A pulled muscle in the inner thigh can be deeply painful and prevent people from performing simple daily activities, let alone exercising. To get back to working out after an adductor injury, rest the muscle, stretch it and ice it.

Shedding unsightly back dimples, or pockets of back fat, can be accomplished through diet and exercise. Spot reduction won't work, but lowering your overall body fat helps you shed fat throughout your physique, including the back area.