As an athlete, this is a must have supplement! There have been many studies on the benefits of this supplement. I have been taking it daily for close to 3 years now. If I were to write all the reasons why, it would take pages. So let me highlight a few reasons why I take this. But this is just a small portion. I would recommend doing some research so you have a good understanding of what it is and why you would like to take it. The reasons I take it are as follows:- It converts food into energy. As an endurance athlete, I need lots of energy. I ride & race road bikes and cover about 6K+ miles per/year. I also run about 700 miles per/year. That is a huge load on my system for energy. This has helped facilitate that.- It is good for your heart. Again, with all the sports I take part in, this is a no-brainer. Heart health is huge! In fact my resting heart rate went from 54 to 43 after I had taken this for about a year. That's incredible.- It helps with Recovery & cellular regeneration. All the wear and tear I get running and biking causes a lot of muscle damage. This helps aid in the recovery process to prevent injury.I have not had any negative side effects, stomach cramps or adverse effects with other supplements. It seems the only issue you will run into with this, is quality and price. That's it! And this makes the mark on both!! Make the purchase! you won't regret it!!