Harley Pasternak's 6 Star-Tested Tips for Looking Your Best at Any Age

The celeb trainer and PEOPLE.com blogger reveals how Sandra Bullock, Halle Berry and more stay forever gorgeous

3. Don't Skip Meals

Who gets it right: Jeff Goldblum, 60
At 60, Jeff Goldblum looks exactly as ripped and lean as he did in 1986's The Fly. It could be because he makes an effort to never skip meals. Not only does skipping meals wreak havoc on your metabolism and blood sugar, but it also reduces energy, decreases bone density and lowers our immune response, which are all critical issues whether you're 20 or 70.