Judging by Peyton Manning's beach bod, no football and a ton of Nationwide commercials does a body good!!!
Check out the retired 42-year-old on the beach in Miami this week -- tossin' around a football with his kids ... and showing off his shirtless, hairless physique.
Look, he's no Cam Newton ... but he's in pretty damn good shape for a guy who's been retired for nearly 3 years!!!
Check the vid ... dude's flashing bulky traps, decent biceps, faint abs -- and yeah, the cannon arm is still there too!