In a new interview, Kevin Hart reveals the one phrase that helps him out on a bad mental health day.

You've just lost weight, and you're left wondering where that part of you went. Fat burning is a complex chemical process that creates carbon dioxide and water, and, essentially, any fat you lose, you exhale away. A minor percentage of fat lost is in the form of water, through your urine, sweat, tears and feces.

Although many nutritionists and dietitians don't seem to like the word "cheat," a well-designed and well-executed cheat meal might very well save your sanity. It might even help you overcome a weight-loss plateau.

As healthy as they are, greens can be a drag. First off, lettuce gets boring. Then washing them, drying them, chopping them... Prepping just the greens can be a multistep process. Plus, have you ever skipped making a fresh salad because you didn’t have any greens on hand?

At 46 years old, Ruth D. transformed her body by lifting weights and focusing on her fitness. She hits the gym four times a week.

From the chiseled six-pack of Sam Heughan to the tight and toned core of Julianne Hough, these Hollywood fitness buffs know a thing or two about how to get and stay in shape year round.

Smoothies are the perfect summer treat! From forming gorgeous lean muscle, to boosting your metabolism and getting clear skin, their benefits are endless. Here are four delicious ones, courtesy of the Tone It Up ladies.

Welcome to Week 2 of the 4-Week Plank Challenge! This week, it's all about getting killer abs in your office attire.

You've made it to the final week of our 4-Week Plank Challenge for a seriously stronger core — but you're not done yet.

It’s Week 3 of the 4-Week Plank Challenge, so hold each variation for at least a minute to show your progress!

MCH and MCHC are two closely related blood test results that indicate how much hemoglobin you have. Low MCH or MCHC means that the amount of hemoglobin in your red blood cells is below normal. A low hemoglobin can be caused by not enough iron in your diet.

Rosé is the perfect year-round wine, from spring picnics to summer barbecues to fall dinners. [More than 190,000 photos are tagged with #roseallday on Instagram](https://www.instagram.com/explore/tags/roseallday/?hl=en), so there are a lot of rosé fans out there!