Sometimes, we all need a motivational boost. And whenever the folks at Greatist need inspiration, we look to our community. Each week, we'll share our favorite fitness photos — tagged with @greatist — from the Instagram community, featuring amazing fitness feats and downright heartwarming moments from across the globe.

This week, we asked users to tag their favorite photos of themselves working out in a groups, teams, or with some friends for the chance to be featured on the site. There are our favorites.

1. Get pedaling with @nessvalencia.

Indoor cylcing enthusiast Ness Valencia loves snapping pics of her favorite classes, and this sweat session is no exception. We absolutely love the way everyone in the picture is managing to smile through their workout — keep it up, guys!

2. Kick into high gear with @aprilpavelka.

In our first-ever video submission (watch the full thing here!) April Pavelka makes a selfie cameo in this clip from a recent TurboKick class. Power through, everyone!

3. Just keep spinning (with expert instruction from @kthake).

Katie Hake hits the bike with her fellow spin instructors — at 6am. We're impressed that so many people came to an early class, and even more impressed at how happy they look! Definitely an inspiration to aspiring early birds everywhere. Thanks for the submission, Katie!

4. Shake it all out in the park with @emireerose.

Fitness instructor Emily Rose brought an energetic group of 37 gymgoers to this outdoor Zumba class. We're not sure why, but any exercise that involves dancing in a park is just about the coolest way to work out. Try it out!

Congrats to Emily Rose (@emireerose on Instagram) for submitting this week's featured image!

Want to be on Greatist? Tag your best fitness pics with @greatist for a chance to be featured! Next week's post will focus on the New York Marathon, so get snapping!