Juice cleanses, the diet regimen of the moment, promise everything from clean skin to detoxification to serious weight loss. Their adherents include celebrities like Gwyneth Paltrow, White Collar's Matt Bomer, and Salma Hayek (who even owns her own brand of cleanses). But what does it really feel like to be a guy subsisting for a few days on nothing but juice—be it kale, beet, or cashew? To find out we put three members of Details' edit team on today's most popular cleanses. Here are their experiences.

The BluePrintCleanse Renovation Cleanse
A three-day cleanse of six bottled juices every 24 hours. The program includes a cashew-nut milk with vanilla and cinnamon, and a knockoff of the master cleanse, a spicy lemonade. The most unpalatable drinks are the green juices (kale, romaine, cucumber). The most palatable of the lot are the fruit-juice mixes like pineapple and mint.
The Pressed Juicery Three-Day Cleanse
Three days of nothing but liquids, with five bottles of juice—two green juices (consisting of kale, spinach, romaine, parsley, cucumber, and celery), one root juice (with beet, apple, lemon, and ginger), two detox juices (grapefruit and mint or cucumber, pineapple, coconut water, and aloe vera)—an almond milk, and chlorophyll water to sip throughout the day, as well as aloe-vera water to drink when you go to bed.
The Organic Avenue Love Deep Cleanse
Drink six juices each day, including Young LOVE* (cucumber, celery, spinach) and Veggie Vibe (carrot, cucumber, beet, celery, chard, spinach, ginger, parsley, and lemon), supplemented by shots of liquid chlorophyll.