Everyone gains weight in the winter. And that's totally fine. It's colder, there's less sun, and the holidays can be a killer. Some use the seasonal shift to their advantage by taking all of those extra calories and putting them into building slabs of muscle. (Check out how that's done with our WINTER BULK-UP program.)

Then again, some might have just put on the blubber.

But whether you spent your winter months getting bigger, for better or for worse, the next plan is for chopping you up: The SPRING TRIM-UP.

Program designer Tim McComsey of TRYMFit says there are three main components to the SPRING TRIM-UP:

1. The program includes several exercises that engage multiple muscle groups at once for an increased calorie burn and effeciency.

2. Rest periods are between 30-45 seconds to keep the heart rate elevated for an increased intensity.

3. Workouts are structured as "tri-sets." Three exercises are performed consecutively followed by a short break. This stimulates several muscle groups at once, further maximizing the calorie burn.

*Note: Day 4 is a rest/recovery day.