Who needs stimulants when your brain’s already doing the most?  Lemon-lime caffeine and bcaa's have nothing on anxiety when it comes to raising your heart rate.
 
Features:
Made using ethically grown and harvested US cotton.
100% cotton for all solid colors
Scratch-free tear away label and no side-seams
Twill tape on shoulders for durability
Collar made with ribbed knitting to prevent curling damage.