Overtime bones can become weak due to lack of physical activity and can be exacerbated in overweight people. It can lead to a condition known as osteoporosis, where the bones will fracture easily. Physical activity helps strengthen the bones.
Impaired judgement is one of the immediate effects of alcohol on your body. This increases your impulsivity and you behave without thinking. This is why it is illegal to drink and drive or show up for work intoxicated.