The kettlebell swing is quite possibly the easiest and at the same time most effective tool when it comes to training the whole body for multiple fitness qualities at the same time. When done for high volume of reps it makes you sweat and huff and puff thus making you fitter and leaner at the same time. The high rep kettlebell swing burns tons of calories and trains your heart and lungs.
Not only that, the swing is one of the most effective exercises to train your posterior chain – the back of the legs. At the same time, when done with a moderately heavy weight it trains your grip. Of course if you don’t have access to a kettlebell right now you could try using a dumbbell just to feel how taxing this exercise is.
Above is a short video I filmed a few years back showing the kettlebell swing from a few different directions. Note how the lower back is nice and tight, how the hips go back and then forward. Also observe the position of the bell. The bottom is pointing away from me. At the top of the swing I exhale and brace my abs more like Bruce Lee was about to punch me.