This is an accurate description of alcohol effect because poison is defined as, "a substance that is capable of causing the illness or death of a living organism when introduced or absorbed". Alcohol damages the liver, which, over decades of regular alcohol intake, can cause liver failure, which could cause death.
Just... just don't drink. or at least don't do it regularly
I would say bicycling because jogging and jumping jacks can be bad on your knees because of the impact. Biking is pretty smooth though and wouldn't have much of an impact. Hope this helps :)
