FITNESS

If you’re a fan of HIIT, AKA high-intensity interval training, you know that sprint workouts are awesome because they’re super efficient. Alternating between bursts of hard work and rest, you go from zero to sweat in record time , and then you’re done! There’s no reason to spend an hour on the elliptical when you could finish faster with a 20-minute HIIT workout , right? If you’re not already into HIIT, though, treadmill sprints or a tabata kettlebell workout can feel like absolute torture. Blerg. Lucky for you, science has a suggestion that might make your high-intensity exercise a little more bearable.

Everyone wants to look their best in their holiday OOTD. But with fast food holiday treats and adorable homemade cookies at every cubicle, party and apartment? Well, let’s just say it can be way hard to avoid that seemingly inevitable holiday food baby. Luckily, we’ve enlisted the help of one very special celebrity trainer (think the woman behind the bodies of The Hunger Games and Pitch Perfect) to help us achieve our holiday fitness goals. Lifesum fitness expert and celebrity trainer Joselynne Boschen, whose client roster includes Elizabeth Banks, gave five tips to keep your exercise routine on track throughout December.