Physical fatigue

Physical fatigue (or muscle fatigue) is the temporary physical inability of the muscles to perform optimally. It is a side effect characterized by feelings of tiredness and weakness. It can occur after prolonged physical exertion and extended periods of wakefulness. People who are fatigued may find it difficult to complete physical actions and may not be capable of getting out of bed or performing everyday household tasks. It can generally be treated by having a period of rest or sleep.

Physical fatigue may occur during the withdrawal of certain drugs including opioids, stimulants, and alcohol.

Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:

See also

• Cognitive fatigue
• Fatigue (Wikipedia)
• Subjective effects index
• Psychedelics - Subjective effects
• Dissociatives - Subjective effects
• Deliriants - Subjective effects