How long should i exercise per day to lose weight? & how many times per week should i exercise to lose weight?

Exercise: Recommend that calories burned exceed calories in. Drinking at least 8 8 ounce glasses per day is important for both hydration and weight control. Try to get in whole foods (fiber) as well as 5 servings of vegetables and 4 servings of fruit per day. Physical activity is essential. At least 8 hours of sleep per night helps. Aim for at least 30 minutes of aerobic activity at least 5 days per week