Please do some more research on 1, 3 Dimeth
It is the primary active compound in the pre-workout Jacked. A substance that gives you energy and focus without the jitters of regular pre-workouts.
More modern studies are highlighting its dangers that were unknown before. Many veteran bodybuilders at my gym who hit up 1000mg Test per week in their cycles are not willing to touch 1, 3 Dimeth.
Buddy of mine at work ended up in hospital with cardiac arrest about 45 mins. after taking 3 scoops of the stuff.
It is not very good for your heart and your central nervous system, especially if you are older.
Essentially you can look at it as a pre-cursor or a close relative to a basic amphetamine, but not nearly as strong.
Be careful