Answer:
Slows brain and body reactions
Explanation:
after a minimal amount of alcohol you tend to misjudge more frequently, and you're reacting slower than a non influenced person. that being said though it may make you feel good, it doesnt improve function at all. only hinders it. for example speed is a upper speed is also called methamphetamine.
The Common, immediate effects of methamphetamine abuse include:
increased activity and body temperature
wakefulness
talkativeness
faster breathing
increased concentration
decreased appetite
elevated blood pressure
rapid heart rate
increased libido (sex drive)
a sense of well-being.
Source of the effects list - https://www.drugs.com/illicit/speed.html