This will help strengthen your shoulders and deltoid muscles. It is not necessary to use a lot of weights unless your trying to develop more power. Go for 10-12 reps and use a spotter if not familiar with exercise. If going solo you will need to usually use your thighs to kick up weights as shown in video. Weightlifting is may appear to be only for muscle building but is also great to burn calories and loose weight. Your metabolism runs a lot harder and stronger the more muscles you develop.