Initially the change was subtle, but with time I noticed an increase in strength and endurance during physical training. I noticed a steady state of alertness through out the day. There was an improvement in general well-being, energy level and a more sound sleep.
C. B. (female, 42), Florida

The effect was a dramatic increase in energy, especially early in the morning. I virtually jumped out of bed.
D. D. (male, 73), New York

A general good feeling has come over me. My emotional state is more even keeled. My mind doesn't race like it did before. My tennis game is much more active, and I hit the ball harder. I feel stronger in the gym, and can lift more weight on the benchpress.
G . S. (male, 77), Florida