It’s not always about the amount stimulants that makes a pre-workout supplement effective. As a matter of fact, in most cases it’s about the quality of the individual ingredients along with synergistic effects of the specific blend. A person can find themselves feeling like a mad scientist at times trying to figure out the perfect mixture of amino acids in order to achieve the perfect pump along with sustainable energy and quick recovery. So when it comes to purchasing a well-known, proven pre-workout supplement, it’s nice when the brand stands on transparency. No more proprietary blends, no more wondering exactly how much of each ingredient you’re getting. Which is why we decided to pick Transparent Labs PreSeries workout supplements. Available in two formulations, BULK and LEAN, this is one of our favorite pre-workout products on the market.