Tried the go2 max loved it during cardio definitely helped w my endurance and heart rate . After the cardio did not feel sluggish .
Ofcourse I watch coach Greg on you tube and have had previous sucess with GO2 so I thought I would also try Turk. So far I am satisfied, I definitely get a form of tunnel vision and cognitive focus when I use Turk. I have been out of weightlifting and exercise for 5 years after getting out of the Marine Coeps and losing my right index finger in an accident. These supplements have given me the slight boost I needed to be consistent with my workouts and overall happy customer!
Taking it for 2 weeks now, I would say conservatively I've noticed about a 10% increase in strength and endurance since starting.
I love these products. I have more energy, I look better and my performance is improving. Will buy again
Its for Gs