If we’re looking for a great upper-body workout, we usually expect that we’ll need dumbbells, resistance bands, or kettlebells. But we have some awesome news: You don’t need any equipment for this 20-minute workout that seriously strengthens your arms, shoulders, and back.

Follow along as Jaime McFaden, a personal trainer at Grokker, shares the best bodyweight exercises for defined arms and shoulders. You’ll do push-ups, dips, planks, and even animal-inspired moves like “bird dog” and “bear crawl” to work your muscles to the max. The circuit ends with a relaxing cool-down stretch and will leave you feeling stronger and more energized by the end. Ready? Just press play.

Here’s the full recap:

Perform each move for 30 seconds.

Step-Tap Reaches
Toe Taps
Jumping Jacks
Arm Circles/Shoulder Rolls
Hip Rolls
Hamstring Curls

Circuit (repeat for two rounds total):
Plank Jacks
Reverse Plank
Bird Dog
Bear Crawls
Punch Combo

Cool Down:
Runner’s Lunge
Hamstring Stretch
Triangle Pose
Switch Sides
Deep Breaths

Looking for more short and effective at-home workouts? Grokker has thousands of the workouts you want so you’ll never get bored. Plus, for a limited time, Greatist readers enjoy 40 percent off Grokker Premium (just $9 per month) and your first 14 days free. Sign up now!