Would U admins think about it?Many times I don't need the whole 10% only 5% & may be lesser just to keep my players in the light green zone 80-90!
Thanks for ur concern & hope to know what U guys think about it?

Keem,

For myself, if your player is at 76% for example, you can add him to 100% then decrease to by 20% making it 80%.

Now, you can effectively add just 4% to him.

Of course this wouldn't work in all occasion. For example when your masseur does not have sufficient balance to make the player 100%.

keem,

You can do as Javier posted - bring it up and then down to make them in whatever zone you want.
It was created by 10% to make it less confusing and faster to restore stamina.