keep walking as much as u can till you sweat!
Fasting just like Muslims do.
Yoga (search in net)
Diet contol by avoiding/reducing excess calorie foods
More protein foods than carbohydrate food
Use food with fiber content(digesting)
avoid junk food/fast food asmuch as u can....
Take some honey with lime juice in luke warm water early in the morning as the first drink, daily.
these are easy ways other than Ayurveda.