I've always led an active lifestyle, and often struggled with finding the right sports bras for high impact activity...running, HIIT training, and kickboxing to name a few. I always wound up with the same issue: the band would be so tight from wearing multiple too-small bras, that I couldn't catch my breath after exerting myself. After years of struggling with my 36G chest and trying to be as active as I can, I finally decided enough was enough. I did some research, and found the Shefit bra. Three days ago was my first time wearing it, and I couldn't believe the level of comfort and immobility (AKA no boobs bouncing!) I felt when working out. And my progress...shocking. I ran a mile in a minute and twenty seconds less than I usually do! After a few more runs and workouts this week, the results were repeated. My performance was enhanced and I didn't leave the gym with neck pain. The only thing I am seeing could be an issue is the metal loop where the velcro band goes through. The band begins to bunch up and could be slightly uncomfortable on my back. But honestly at this point, that's the least of my worries. I love my Shefit bra and look forward to remaining a loyal customer for years to come.