You already know what they say about all work and no play. So instead of lifting weights and running on a treadmill, why not jump on a trampoline or lace up some roller skates? A look back to your youth is all it takes to add a dose of fun to your summer workout routine.

Bounce into shape

Put a spring in your step by ditching the gym for a trampoline. You don’t need a trampoline of your own to take advantage of its benefits because classes are offered throughout the city. JumpLife in Tribeca has trampoline classes for adults whether you’re looking for a club-like atmosphere or a slower workout that incorporates yoga and Pilates. And if you’d like to learn some aerial skills, check out trampoline classes at Trapeze School New York. $28 per class at JumpLife; $40 per class at New York Trapeze School

Whittle your waist with a hoop

Grab a hoop (one for adults, which is larger and weighted) and swing your hips: A study sponsored by the American Council on Exercise found that a 30-minute hoop session can burn 210 calories. It’s a total body workout that’s a great summer exercise you can do in the park or at the beach. To learn some moves, head to GrooveHoops, where professional hula-hoop entertainers lead night classes for all levels at the 14th Street Y, hoop provided. $12 per class

Roll away those rolls

Roller-skating is so much fun, you won’t even realize you’re getting an American Heart Association-endorsed major cardio workout. The LeFrak Center at Lakeside, a popular sports complex in Prospect Park, offers covered outdoor roller-skating between April and October and skate rentals for all ages. And if you’d rather not dodge kids in the rink, head there on Friday nights when it transforms into Lola Star’s Dreamland Roller Disco, a skating party with a DJ and carnival performers. $6 Monday-Friday, $8 weekends and holidays; $6 skate rentals; $18 Lola Star’s Dreamland Roller Disco
 
Skip the gym to skip rope

Jump ropes aren’t just for kids on the playground. Punk Rope, a fitness class first offered at NYU that’s now popular around the country, integrates jump ropes with strength training, relay races, games and drills for an intense interval workout. Punk Rope will boost endurance while making you stronger and more coordinated. $20 for non-members at Greenpoint YMCA; $12 for non-members at 14th Street Y 

No walk in the park

Your dog needs to get off the sofa just as much as you do, so why not exercise together? Because this is NYC, of course there’s a class where you’re both welcome: Go Fetch Run offers cross-training sessions in Prospect Park and Central Park. Your pup will be your cheerleader as you run, squat, lunge and strength train. Then you’ll pair up to conquer an agility course. $5 first class, regularly $25