Ecstasy is a stimulant to begin with, and Ecstasy pills are often cut with some form of speed, or sometimes cocaine. Stimulants give you a lot of nervous energy, which can cause you to tense up and clench your jaw and/or grind your teeth.
I can tell that you're angry by the way you clench your jaw.
masseter
A person may do something like clench their teeth during a seizure, but epilepsy does not cause bruxism.
Tension held in the jaw can cause fatigue. Holding tension in any muscle group can cause fatigue. Holding your jaw tight can also cause neck pain and headaches.
Clenches is the plural of clench
chemicals
No.
Ralfe Clench died in 1828.
John Clench died in 1607.
Andrew Clench died in 1692.
Ralfe Clench was born in 1762.
No, you're thinking of olestra.