Spring has sprung, so get your chiseled physique off the couch, and get out and get some fresh air (you can count that as cardio)! While you’re out there, be sure to pick up a copy of the April issue of Muscle & Fitness

Check out our preview above, where our deputy editor, Zack Ziegler, talks about how cover star and fitness icon Mike O’Hearn maintains such an incredible physique at 48. He also talks about what else you can find inside the April issue, on newsstands now.