Three Weeks to Summer Fit
Matthew Brown / Getty Images

Three Weeks to Summer Fit

A crash workout is not the best way to get in shape. Eating well and exercising daily over a long period is a much healthier – and easier – approach to getting a body you can live with. But if it's a matter of vanity, not long-term well-being, you can turn your body around fast. "Three weeks may seem last minute," says Ron Mathews, a Hollywood trainer who specializes in high-intensity circuit routines and who designed this 21-day workout for us. "But you just need to maximize caloric output and minimize calorie input while activating as many muscles as possible."

Simple. Grueling. Effective. Here's your plan.

Launch Gallery »

Facebook just added to your Activity: This Article


Stay Connected

Sign up to receive the Men’s Journal newsletter and special offers from MJ and its marketing partners.

How we use your email

We may use your e-mail address to send you the newsletter and offers that may interest you, on behalf of Men's Journal and its partners. For more information please read our Privacy Policy.


Spring Gear

The Best New Tools, Toys & Tech

Plus: 21 Days to Total Fitness