​If you scroll through Instagram and don't see a mini-band workout video, were you really on Instagram? The small rubber loop has slingshotted to full social peak, and no wonder: It's the cheapest, easiest way to make any body-weight exercise more effective.

Originally a proven alternative to free weights and machines for the elderly and injured, elastic bands have been confirmed in a new review to boost muscle strength and functional performance in healthy folks too. But that's not the only reason we love mini bands. Let us count the ways...

Mini bands are unique among resistance tools because they place constant tension on your muscles, keeping them equally engaged for both the contracting and lengthening phases of an exercise, says alexia Clark, a personal trainer in Scottsdale, Arizona. In fact, one study in the European Journal of Sport Science found that using elastics can increase muscle activity up to 15 percent more than training with dumbbells. The stretchiness of the band also allows you to tap smaller stabilizing muscles that you can't hit with dead weight, because they pitch in to maintain control all along the range of motion (so the band doesn't slip or snap). And bands do all this without adding weighted stress on your joints (mainly your hips and knees). So "while you might get sore, you literally can't overdo it," says Ben Bruno, a personal trainer in Los Angeles.

Here are 35 awesome exercises you can do with a mini band:

preview for 35 Awesome Exercises You Can Do With a Mini-Band

Calorie burn goes hand in hand with muscle activation: The more muscle fibers you work—especially within your glutes—the more cals you zap. And that's just in the moment. Bands help build muscle size and strength over time, and it takes more energy to maintain muscle, so you'll spur your resting metabolism as well.

Related: This Is How Long You Really Need To Hold A Plank To See Results

Their best function is an inherent "autocorrect feature," as BJ Gaddour, trainer and creator of workout-subscription site TheDailyBJ.com, puts it. An example: Placing the band above or below your knees for squats and deadlifts pulls your knees together, which can cause "valgus"—a form flaw women are prone to because of their wide hips. "This forces you to reflexively push your knees apart, helping you burn out your glutes and hamstrings," says Bruno. (It also reduces knee pain.) A band around your wrists can enhance pushups, too, by encouraging optimal elbow angles.

Related: 'I Did 10 Minutes Of Strength Training Every Day For A Month—Here’s What Happened’

Your glutes and scapular muscles benefit most from bands, as they don't always engage properly with weights, says Gaddour. "You'll better sculpt those areas and be more proficient at any exercise." How we move those muscles also matters: We tend to lack lateral stability, since we mostly move forward and back or up and down. When used for moves like squat walks, the band amps mobility in that direction—crucial for dynamic activities like ice skating and dancing. (Dance your way fit with High-Intensity Dance Cardio, the first-ever socanomics DVD!)

Bands aren't colored just for looks—the shade reflects their level of resistance. (Each brand has its own spectrum, and some sell a variety pack, so read the description before buying.) Our faves:

1. Let's Bands Lady Set

Buy it: $30 (pack of 3 plus bag), letsbands.com

2. GoFit Pro Power Loop

Buy it: $20 (pack of 3), amazon.com 

3. Sling Shot Grippy Hip Circle

Buy it: starting at $27, amazon.com 

4. Thera-Band Professional Latex Resistance Band Loop

Buy it: starting at $5, amazon.com

5. EliteFTS Pro Short Monster Mini Resistance Band

Buy it: $4, elitefts.com

6. Perform Better Mini Exercise Bands

Buy it: $15 (pack of 4), amazon.com

7. SKLZ Mini Bands

Buy it: $20 (pack of 3), amazon.com

8. SPRI Mini Bands

Buy it: starting at $7, amazon.com

9. Dynapro Precision Mini Exercise Bands

Buy it: $10 (pack of 4), amazon.com

10. TRX Mini Bands

Buy it: $3.75, trxtraining.com

This article originally appeared in the November 2017 issue of Women's Health. For more great advice, pick up a copy of the issue on newsstands now!

Headshot of Marissa Gainsburg
Marissa Gainsburg
Marissa Gainsburg is the Features Director at Women's Health, where she oversees the magazine's news-meets-trends Warm Up section and Love & Life section. After receiving her journalism degree from the University of Florida, Marissa has spent the past eight years in NYC with her dog Bentley, writing and editing fitness, nutrition, health, sexual health, mental health, relationship, and travel content. She's held previous positions at Self, Allure, and Cosmopolitan.