KYW Newsradio’s Medical Reports are sponsored by Independence Blue Cross.
Obviously all exercise can be beneficial, but according to this report, rapid walking and jogging were extremely effective, and close behind were mountain climbing and dancing.
Surprisingly, cycling, stretching exercises and swimming did not have as great of an impact, but there were problems with this study, the biggest issue being that there was not a consistent measurement of exercise intensity.
This means that the results could be somewhat flawed. What we can take from this, however, is consistent exercise helps.