在你准备休息时，设置一个闹钟来提醒你结束休息。

At the start of your break, set an alarm clock to remind you when your break is over.

youdao

如果你常常沉迷于网络而忘记时间，可以尝试安装一个软件帮你计时，来提醒你到休息的时间了。

If you find yourself sucked into the Internet and frequently lose track of time, consider installing software that keeps track of time for you, and can remind you when it's time to take a break.

youdao

Scirocoo Take a break 和Timrout都很简单，易于使用。 免费的app软件可以提醒你到离开电脑屏幕去休息的时间了。

Scirocco Take a Break (Win) and TimeOut (Mac) are simple, free apps that will remind you it's time to take a break from the screen.

youdao