Some are a death in the family, a problem at home or financial problems
not quite that clever
pressure, diet, depression
im not telling you
not having the facilites such as a gym or resources that let you train in your area
Alcohol consumption leads to nerve disorders and also Jaundice. Under such conditions the person becomes unfit for any stress-laid physical activities. So drinking alcohol does affect the sports training and performance
If you have dehydration, you become lightheaded and sometimes black out so it could make you lousy in the sport or the sports training.
if we eat carbohydrates most gives us energy and affect the sports performance
Sports training and sports performance is greatly affected by smoking in several ways. Smoking reduces fitness. It does this in a number of ways, chiefly by reducing the amount of oxygen available in the body. Since oxygen plays a major role in energy production, even a minor depletion has an impact on physical performance.
It can affect your sport's performance by the characteristics you have that affect play.
Wearing jewelleries might affect sports performance because you might hit someone with that jewellery