Five will save you fifty

 This is basically about mentality and will. When the ball is lost and your team has to win it back, you have to make the opponents play where you want. Because If you don't they will have control over you and can therefore score easier. How do you do this?. You take precaution, taking precaution is better than reacting to the opponents. 

How do you take precaution?. You try and block every option they ball holder has and make him play the one option you want him to play. To do this, you have to do more to do less. This is what "five will save you fifty means". Would you rather sprint 5 yards and block off an option or let them play the option and then sprint fifty yards after the ball. 

So basically keep in mind that you need to sprint and do everything and even if you are tired, finish the sprint and then rest while blocking the option. 

That's it