ORLANDO, Fla., Nov. 6 (UPI) — People who say they do about 30 minutes of jogging, bicycling or swimming a day were twice as likely to maintain a stable weight, a U.S. study found.
Northwestern University’s Feinberg School of Medicine researchers said a consistently high level of physical activity — 30 minutes a day of vigorous activity — from young adulthood into middle age increases the odds of maintaining a stable weight and lessens the amount of weight gained over time.
…
"The results will hopefully encourage young people to become more active and to maintain high activity over a lifetime," Hankinson said in a statement.
https://www.upi.com/NewsTrack/Health/2007/11/06/vigorous_exercise_reduces_weight_gain_risk/1240/oldId.20071130184706590
Biking in Baltimore