5 YouTube Exercises to Strengthen Your Core

Whether you're training for a triathlon, looking for a workout you can do indoors, or sitting at a desk all day and need to improve your posture, a few basic at-home or in-gym core workouts may be exactly what you need.

We rounded up five core-strengthening exercises on YouTube, featuring yogis, MMA fighters and more. Even if you don't have access to a gym or your own equipment, many of these exercises can be done at home — with a little willpower. If you have a buddy to work out with, even better

Which core workout is most effective for you? Tell us in the comments. Read more...