Jumping jacks

Sitting at the computer the whole day can really take a toll on one's health. It also results in unwanted weight gain. However, there is any easy way to counter the weight gain and keep yourself healthy. Just do jumping jacks. Jumping jacks burn about 100 calories in 10 minutes. No special equipment or skills are needed. Jumping jacks are high impact, which may tax the joints. Use jumping jacks in a circuit, doing them for 30-60 seconds and alternating them with other cardio exercises such as marching, jogging, jumping rope, etc. Try a different variation of jumping jacks each time, repeating the circuit for 10-30 minutes.