Jack3d is probably one of the best pre-workout supplements possible, which is why so many athletes and professional bodybuilders use Jack3d to kickstart their workouts.

Josef Rakich of Bodybuilding.com fame uses Jack3d for a boost in his workouts when he needs it. Not a regular user, but his physique will attest that his regard for Jack3d.

Adam Marsh (oh wait, that’s me!) owner of the Acquire Family is an avid user of Jack3d.

Michelle Beck – Internationally renowned Figure Athlete uses Jack3d in as a part of her weight training activities. She is an official USPlabs Athlete.

Will ‘Armbender’ Sarty an international arm wrestling superstar, who was ranked 4th in his weight class uses Jack3d before his contests and as a part of his training schedule. He is an official USPlabs Athlete.

Chris Duffin, a 19 year old American Powerlifter who boasts an 801lb deadlift, uses Jack3d before powerlifting competes as well as during his off season training.