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Amphetamines or Speed reduces your attention span whilst driving, affecting your ability to react to things, and:

  • Causes headaches and dizziness
  • Can lead to an irregular heartbeat and irregular breathing
  • Can lead to feelings of irritation and cramps
  • Affects co-ordination and can cause you to collapse.

As speed is a mental stimulant it can make you feel alert and confident but also makes you overly excited and restless. A few hours in and the effects are rapid mood swings, depression, sleep problems, total exhaustion and fatigue.