From Weight Watchers:

Use the stairs whenever possible"Taking the stairs strengthens all the major muscle groups in your lower extremity. Hamstrings, glutes, quads and calves are all going to reap that benefit," says Cedric Bryant, PhD, chief science officer for the American Council on Exercise. As a side bonus, you'll also burn a calorie for every 15 steps.
Identify and separate exhaustion from hunger. When you are tired, go to bed rather than stay up and eat.

While the claims for drinking 64 ounces or more of water each do not have a valid scientific basis behind them, drinking enough fluids to prevent dehydration is critical. This means replacing the water that is lost each day in urine, sweat, breathing, and other bodily functions. Water losses are greater in warmer climates, during strenuous exercise, in high altitudes, and in older adults. For most people, these losses can be covered by drinking about 48 ounces of fluid per day which is the amount Weight Watchers suggests as a guideline for good health.