Do you like working out solo, or do you recruit a partner? It’s all personal preference, really, though there are a lot of good reasons to sweat with someone else: Having a buddy can make you work out harder than you might on your own and keep you accountable (a.k.a., get you to roll out of bed and put on your gym gear instead of sleeping in). Plus, he or she can even make your workouts safer—and, if these celebrity photos are anything to go by, also much more fun. Jessica Biel and her pups: When it comes to exercise time, dogs do not take “no” for an answer. Jessica doesn’t seem to mind! Eric Dane and Billie, his daughter with Rebecca Gayheart: I mean, come on. Cutest workout buddy ever! Heidi Klum and boyfriend Martin Kristen: There are tons and tons of photos these two exercising together (and enjoying post-workout beverages!). Tons. They use city benches for leg exercises and all kinds of neat stuff. Heidi Klum and Russell Simmons: But Heidi will also exercise with her pals! Here she is doing yoga with Russell in the park… …and Kim Kardashian (this was shot pre-North West, of course). Hugh

Do you like working out solo, or do you recruit a partner? It’s all personal preference, really, though there are a lot of good reasons to sweat with someone else: Having a buddy can make you work out harder than you might on your own and keep you accountable (a.k.a., get you to roll out of bed and put on your gym gear instead of sleeping in). Plus, he or she can even make your workouts safer—and, if these celebrity photos are anything to go by, also much more fun.

Jessica Biel and her pups: When it comes to exercise time, dogs do not take “no” for an answer. Jessica doesn’t seem to mind!

__Eric Dane and Billie, his daughter with Rebecca Gayheart: __I mean, come on. Cutest workout buddy ever!

Heidi Klum and boyfriend Martin Kristen: There are tons and tons of photos these two exercising together (and enjoying post-workout beverages!). Tons. They use city benches for leg exercises and all kinds of neat stuff.

Heidi Klum and Russell Simmons:__ But Heidi will also exercise with her pals! Here she is doing yoga with Russell in the park…

…and Kim Kardashian (this was shot pre-North West, of course).

Hugh Jackman and daughter, Ava: I love Ava’s running determination! And, er…look at Hugh’s biceps!

Vanessa Hudgens and her friend:__ Dealing with photographers, post-workout, is easier with a pal. (Well. I’m assuming so. I don’t know firsthand, obviously.)