According to ACSM, tests allowing fewer than 3 repetitions before momentary muscle fatigue measure muscular strength, whereas those that require more than 12 repetitions measure local muscular endurance. For muscular endurance Dynamic Repetition is always advised, where you repeat a particular test more than 12 repetition, where as for strength it is expected to do repetition one to three times.
Caffeine is usually not dangerous when used carefully. Depressants are a group of drugs that slow down the activity in the brain and body. and coffee helps you stay awake.
