
Is Jack3d (or any other Pre-Workout Supplement) Safe?– UPDATED
** Updated with DOD (Department of Defense) warning below.
As Grandpa’s old saying goes, “Where there’s smoke, there’s usually fire”. In this case, we’re talking about pre-workout Supplements like Jack3d and C4, which because of their stimulant and chemical properties tend to come with their own built-in controversy. While there’s various ingredient combinations found in Pre-Workout …



