No there is no scientific evidence. Maybe make you very hyper but cannot make you stop growing.
Is means to have a happy photo of your self and be who you want to be in life .
Answer:
1. video, drones that fly above an record the plays so that players can work on it to become better.
2. easier to keep track of scoring on a score board than have to use a referee or umpire to keep track of score.
3. it can tell the difference between each players skill level an what needs improvement.
4. video broadcasting shows every game down to the last detail.
5. also communication between the coach to players through headphones to chips
