In just under a month, I'll be stumbling through the 2016 Tough Mudder mud run. Last year, I managed to get through the course with no training, smartwatch and all. This year, I want to do a bit better. But that means actually doing some exercise and (hopefully) getting fit.

If you're dreading a workout, maybe you're looking at it the wrong way. Think about the moment you'll leave the gym: how will you feel with that workout behind you? Relaxed, accomplished, refreshed?

While the wide-grip push-up is a legitimate exercise, many of us set our hands too wide for the wrong reason -- and get a less effective exercise as a result.

Even if you love running, sometimes it's hard to get your shoes on and your butt out the door. Sweeten the deal by promising yourself something great for when you've put in your miles.

Crunches are the classic ab exercise (although planks and push-ups have their fans too). To really target your abs, though, it's important to use good form.

Pull-ups are a great exercise for building upper body strength, but they're also really hard to do if you're not already used to doing them. If you're not able to do more than one pull-up already, this video will show you how.

We've written about a lot of workout options here on Lifehacker: from quickie options to gamification theory. But the best workout of all, according to experts, is simply whichever one you enjoy -- because that's the one you'll stick with.