This is a product that I really like. I am on my second cycle of it. What really prompted me to give it a shot was the fact that I read reviews on it discussing it's effectiveness when it comes to sleep. We all know how important sleep is to a body builder- especially the sometimes hard to reach REM. MHP discusses a decade of research that went into this product to develop it. I believe there are two essential ingredients that really make it effective- ZMA and Valerian root. The ZMA helps with hormonal support and the Valerian root helps you sleep. I have definitely been sleeping a lot more since taking this product.
The first month that I took this was during a cutting cycle- I cut about 1500 calories out of my diet per day so I wasn't expecting to make any serious gains. The one thing that I did notice was increased recovery time. My workouts during that month consisted of 10 x 10's (10 sets of a weight 10x's with a 30 second rest.) If anyone reading this has ever done this type of workout, then they know that it can be very painful the following days. You also drop weight fast while using this workout style. I can say that I did lose about 10lbs during this month, but I gained strength, stamina, and looked a lot better. Of course, diet plays a big role, overall, but I believe Cyclin helped me with recovery and the ability to increase my strength. I would definitely recommend it, especially for those who have difficulty sleeping and making gains. It can be pricey but I have been able to find it at a cost of roughly have retail- so it boils down to about a dollar per day. Musclepharm has a similar product- it uses Melatonin instead of Valerian root and is about $10 cheaper. I am probably going to try that next month.