How to disable sleep Mode?

How can you easily disable sleep-mode so that internal Timers and Output/Input pins keep working without going to sleep?

Eh ?

What are you on about ?

Can you give us some clues about the Arduino you are working with and what you are trying to do ?

i`m working on a Numitron (old 7-Segment Displays from the Udssr) clock with 4x 8-bit registers on a Arduino Nano driven by the internal Interrupt Timer1. I don't want the Clock to go to sleep (obviously), I know that that's not really that common, I only found explanations for how to set Arduino to sleep.
._.

so I need the Timers and the Output/Input Pins to stay active.

(deleted)

How to disable sleep Mode?

Don't enable it.