Substance abuse such as drugs, alcohol and tobacco, family problems such as domestic violence and abuse, social problems such as peer pressure, bullying, and exclusion, and so many other environmental reasons, but substance abuse, family dysfunction and social problems are the common reasons why.
There is no exact weight. This is not no question on a homework sheet. Be yourself hunny. Don't worry about your weight.
Nail bitting is a unhealthy habit because you're damaging your nails and plus there is so much bacteria under them. How you could stop it is put a rubber band around your wrist and snap it every time you feel like bitting them? Haha idk.
A higher resting heart rate means that your metabolism is higher (you burn more calories resting than the average person). This is the opposite for a slower resting heart rate, which means your metabolism is lower and less calories are burned resting.
