Endurance and cardio capacity increased!
Redset improved my cardio capacity and recovery.  No joking around.  I exercise to stay in shape and to burn extra calories.  I use the stair master.  I could noticeably see my endurance increase without feeling like I will fall out from lack of air or energy.  I  am able to breathe more and keep going. Also I am able to recover faster.  I bought this also for my sisters.  They all could see more endurance after their normal stressful workdays.
Rating: 5 stars