Physical fatigue

Physical fatigue can be described as a general feeling of bodily exhaustion. The intensity and duration of this effect typically depends on the substance consumed and its dosage. It can also be further exacerbated by various factors such as a lack of sleep or food. These feelings of exhaustion involve a wide variety of symptoms which generally include some or all of the following effects:

• Sedation
• Perception of bodily heaviness
• Decreased libido
• Motor control loss
• Sleepiness

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 with a period of rest or sleep.

Physical fatigue is often accompanied by other coinciding effects such as cognitive fatigue. It is most commonly induced under the influence of moderate dosages of antipsychotic compounds, such as quetiapine, haloperidol, and risperidone. However, it can also occur during the withdrawal symptoms of many depressants, and during the offset of many stimulants.