thenk you very much for the fast answer!!!

now im scared to use coin control... can i do something wrong?
and for what is it ?
you cant do anything bad, but wrong... sort of.
coin control gives you the ability to select which of your coins you are sending.
for example:
you have 200 coins in your wallet, 100 of them are 44 days old and 100 are 1 day old.
**coins acquire age as they sit in your wallet, if you send them anywhere (even to a diff address in your wallet) this will reset the coins age.
you now want to send 100 coins to the exchange, by default the wallet would send your oldest coins ( I am pretty sure anyways) which would be the 44 day old ones.
this now leaves you waiting for 44 more days until your new (1 day old) coins are able to stake.
With control, you can specify that you want to send the 100 (1day old) coins to the exchange so that in 1 day your other 100 ( 44 day old) coins will start staking.
hope this clears it up, if not let me know.
Thanks.