How much should people exercise each day?

Each of us have various parameters to measure.

1. your routine work : Is it physic work or desk work ?

2. How much you Eat ?

3. What is your Age?

Based on these factors one can decide how much exercise one needs

1. General rule is as much you eat you need to keep your weight in control besides keeping fit one need to workout 20 to 40 minutes daily for 5 days.