please my machine goes to sleep every 15 minutes making my work impossible help me please !
not glitch stays on for 5 minutes then goes to sleep 
Yes, that’s one of the technical restrictions that make it possible to keep Glitch free for everyone.
Check out https://glitch.com/faq#restrictions
What exactly are you trying to do? If your main problem is making your data persistent, have a look at this: https://glitch.com/faq#db
If you’re wanting it to stay online use Express to create an open port for your project and then use UptimeRobot to ping your project every 5 minutes.