Couch lock? Not with this one. J1 (also known as Jack 1, Jack, or J-1) is a high-end, sativa-dominant hybrid that is sure to energize and get you moving. Be warned, however - the spicy-yet-sweet J1 is not for the faint of heart: This strain is potent, hard to find, and sure to get your creative juices flowing, so its best used to start days, not finish them.