Book Nook: 'Your Body Beautiful'

YOUR BODY BEAUTIFUL: Clockstopping Secrets to Staying Healthy, Strong, and Sexy in Your 30s, 40s and Beyond, by Jennifer Ashton, MD, with Christine Rojo. Avery Books, 296 pp., $26.

Obstetrician-gynecologist Ashton -- the medical presence on ABC's afternoon show "The Revolution" and author of "The Body Scoop for Girls" -- writes that women in their 30s and 40s are in the "make-or-break years" for determining their lifetime health.

Ashton wants you to follow her five-week plans in five areas: diet (no fads), fitness (cardio, weight training and more), beauty (especially sleep), stress reduction (journaling, dancing, socializing).

And then there's sex. She quotes a Scottish study that "asked observers to guess the ages of more than 3,500 people. The people who had the most sex also looked much younger than their real ages -- four to seven years younger!"