Perhaps you're tired of doling out your dollars for expensive memberships or boutique classes, or maybe you just can't seem to find the time or muster up the energy to head out to a gym. That's where YouTube workout videos come in handy. Not only can you follow along from the comfort of your own home, but they're also free to watch and can even deliver impressive results over time! But with hundreds of thousands of options available, which ones are worth the effort? We did (part of) the work for you and rounded up the videos our own editors rely on for workouts that are fun, effective, or efficient — or even all three at once. Whether you're looking for a heart-pumping dance routine or a 10-minute ab exercise, bookmark this for the next time you want to get moving.