And exercise stimulates the endocrine system and can improve reproductive function, explains Berger. The endocrine system is made up of glands that secrete hormones in the body; this system plays a key role in regulating metabolism, mood, tissue function, and sexual function. Bottom line: There are a lot of ways your sex life can get a boost from working out.
Love 'em or hate 'em, you can't talk about ultra-effective no-equipment exercises without mentioning burpees (especially when there's a push-up incorporated). "The burpee with push-up is a full-body exercise that works your core, arms, quads, glutes, and hamstrings," explains Harbison. "[They also] rapidly increase your heart rate, especially if you add an explosive jump at the end of the movement." Strength, check. Cardio, check.
No matter what exercise routine you choose, use the time to meditate. You may wonder how marathon runners are able to put so many miles on their bodies. It’s because the pain from running that you avoid is something they’ve learned to harness to enter a transcendental state. If you’re aware of the benefits of meditation and exercise but don’t have time to do both, you can combine them, killing two birds with one healthy stone.
You’ll find planks among Ceasar Barajas‘, Jessica Muenster’s, and Amanda Murdock’s favorites exercises to do with no equipment. Murkdock (who recommends “planks all day long”— ouch) says that they work the entire body, can be done anywhere, and have a lot of variations. Muenster specifically favors plank jacks with palm-to-elbow movement because they also raise your heart rate.
If you're ready to move on from classic Bulgarian split squats, Swan's amped-up variation gets your upper body in on the action for a true total-body exercise. "This combination move works your legs, butt, chest, back, arms, and core," she says. "And it not only hits all the major muscle groups—it also lets you work on balance." Give it a shot and you'll see why.