Justin Bieber and Hailey Baldwin aren't just focused on Justin's mental well-being, they're focused on their physical fitness, too -- and hey, the two go hand-in-hand. So the husband and wife teamed up for a workout, on Friday, going to a private gym in West Hollywood to get their sweat on!

Seems Hailey is getting LOTS of swag from Adidas -- Hailey wore the 3-strip yoga pants with matching crop top and brand new white kicks while Justin wore a muscle shirt revealing his TONS of tatts.

These two look absolutely amazing and you may think, because they have celebrity genes, that they don't have to work to look as good as they do, but I bet they'd argue otherwise! Trips to the salon, the stylist and the gym keep these two in tip-top shape!