Thanks to celc5, I received 2 servings of Slingshot. With 2 servings of Slingshot, I decided there was enough for both my daughter & I to try it. I took mine last night and I had a great workout! I did a lighter workout (total body-lighter because of a slight pull of my left biceps) followed up with 10 minutes of HIIT on a stationary bike. It was a great workout. Energy & Stamina were outstanding. I also was sweating a ton, holy cow. My daughter, who is a competitive swimmer, will try her's later this week and I'll post a followup on her workout. Thanks to Celc5 for sending me these samples, it was very nice of him to do so!