What kind of exercises are sutible for loosing weight and for a 12 year old?

Aerobic: To lose weight you need to burn more calories than you eat so anything that burns calories- walking, running, biking, swimming is best- 1/2 to 1 hour/day. But a healthy sustainable(not temporary) diet is crucial too. I like dr. Furhman's diet: http://bit.Ly/1dhw9ht dr. Weil has useful info: http://huff.To/19ygs8y- see his "discuss that" link in his article. Minimize sugars, starches ; fried foods.