Lower Body Burn
Will Have You Seeing Double

Supporting The Ronald McDonald House Charities ®

Led by Lauren and Kelly Collins, Sisters, Founders of SISSFiT & former D1 Track and Field Athletes

Weights Optional / 37 minutes / All Abilities

About Lauren and Kelly

We're sisters, certified fitness trainers, sports models, and former Division 1 Track and Field athletes.  

With an extensive background in sports and fitness, in addition to a first-hand understanding of hectic and demanding careers, we joined forces to bring you our realistic and effective approach to everyday working out.   

SISSFiT is the brand we created to inspire, empower, and educate individuals to lead stronger, healthier, and more fit lives. We utilize efficient fitness and nutrition methods to encourage a balanced and sustainable lifestyle.

The SISS in SISSFiT refers to sisters and is an acronym standing for Stay Inspired, Stay Strong.  Learn more about Lauren, Kelly and SISSFiT on their Homepage and Instagram.

Lauren and Kelly are dedicating this workout to Ronald McDonald House Charities because, two weeks from now, Lauren's one year-old daughter will be having heart surgery.

Due to COVID, Lauren and her husband will not be allowed to stay with their daughter in the hospital. Instead, they will be relying on Ronald McDonald House for a place to stay, and other services during this challenging time.

Donations are optional and appreciated. If you're in a position to do so, please click the button below to make a donation directly to Ronald McDonald House Charities.


The FASTER by SISSFiT app provides a variety of audio-coached workouts including, treadmill, outdoor run, elliptical, strength, and more.

Whether you workout at a gym, at home, or outside, there's an option for everyone.

Say “goodbye” to wandering around the gym aimlessly. SISSFiT will guide you step-by-step through the most efficient and effective workouts so you can get your sweat on and then get on with your busy day.  

How To Play The Music In The Video

This video shows you how to choose and control the volume on the music in the workout video.

We're thrilled to be partnering with feed.fm, which enables you to choose the music genre for your workout, and control the volume for both the music and the coach.  

Big thanks to feed.fm! We hope you like it!