Timers in Seconds
Adblocker may prevent any ads. There's no alert sounds at the end of the timers so you will need to check back. Some have a countdown noise which you can mute if it's too annoying. If you make it in time get yourself a healthy dopamine fueled treat, if not well done for trying!
For when you need to leave in / have something done within:
5 minutes
10 minutes
15 minutes
20 minutes
25 minutes
30 minutes
35 minutes
40 minutes
45 minutes
50 minutes
55 minutes
1 hour
Repeat as needed.