25 minutes is too short, but I've found that a 90 / 15 minute cycle works for me. I highly recommend this Pomodoro extension: https://chrome.google.com/websto

25 minutes is too short, but I've found that a 90 / 15 minute cycle works for me. I highly recommend this Pomodoro extension: https://chrome.google.com/webstore/detail/strict-pomodoro/cgmnfnmlficgeijcalkgnnkigkefkbhd https://chrome.google.com/webstore/detail/strict-pomodoro/cg... You set the minutes per cycle and what sites to block. Once a cycle is started it blocks those sites until the timer is up.