STACK Conditioning Presented by ASICS is the ultimate workout companion. Featuring a customizable interval timer and fitness challenges, the app allows you to compete against friends and ensures you’ll beat your best times.

The STACK Conditioning Interval Timer can be used to time your interval workouts, whether your training involves sprints, weightlifting, Tabata, CrossFit or anything else. Use it to follow one of the free 8-week sport-specific workout plans that come with the app or follow your own plan. Either way, the audio cues will alert you when it’s time to start and stop, so you’ll never miss a set, even while you’re listening to your favorite playlist while working out.

See where you stack up against your teammates by taking one of the conditioning challenges, which are based on real fitness tests used by pro and collegiate athletes, and performance coaches.

Key Features
**Fully customizable interval timer
Whether you have your own workout or you’re on a STACK Conditioning Program, you can use the interval timer to create and guide your high-intensity workout.

**Pro-level fitness assessments and challenges
Challenge yourself and compete with your friends in conditioning tests used by the pros. Each challenge includes detailed instruction to make sure you know how to perform it correctly.

**Sport-specific conditioning plans
Free, 8-week conditioning plans for your sport - all available within the app, or as a download to print and use offline.

**Tracking features
Sign up or log in using your STACK Conditioning account and save your workout times to your profile.

** Apple Watch integration so you can use the Watch to start and pause the timer if it's on your arm band.

**Store locator
Find the ASICS store closest to you.

** FOR THE ATHLETE, BY THE ATHLETE **

STACK exists to educate and inspire the next generation of athletes. STACK platforms include: STACK.com, the digital home of all STACK content and web-based tools reaching more than 15 million monthly unique visitors, STACK Magazine, targeted to high school athletes, with a circulation rate base of 875,000 and readership of more than 5 million, distributed in 13,500 high schools across the country, representing 75% of all high schools with varsity sports programs; and STACK Velocity Sports Performance, the largest athletic performance training organization in North America with 40 STACK Velocity training facilities across the United States. Learn more at www.stack.com