football

1. have to be dedicated

1.1. spend many hours a week at football

2. equipment

2.1. equipment is a lot more advanced nowadays

3. very physical sport

3.1. have to be physically strong and take seriously or you can get hurt

4. lots of safety rules

4.1. new rules are added to ensure safety of all players

4.1.1. lots of rules have been added because of the many concussions

5. offense and defense

5.1. 11 players on both sides of the ball

5.1.1. past highschool people only play one side