4. Drink more coffee.
Start your day with a cup of joe. Caffeine is a natural diuretic and an excellent source of antioxidants, which protect your cells from damage. You can have up to 400 mg — about a venti Starbucks coffee — daily, according to the Dietary Guidelines for Americans.
Not much of a coffee drinker? Tea is also a natural diuretic, and types of herbal tea such as dandelion or fennel root can also lend a hand. In fact: When a recent study compared the metabolic effect of green tea (in extract) with that of a placebo, researchers found that the green-tea drinkers burned about 70 additional calories in a 24-hour period.