Focus 101%
Focus 101% is a guide and printable planner for working and studying in measured blocks, with active breaks.
Inside: an 86-page guide made to read on your phone (six effects that pull attention away, the six rules of a focus block, how to choose your block length, the capture list for interruptions, a menu of 18 active breaks, a 14-day plan and ten common problems with what to do), a printable planner in US Letter and A4 (daily sheet, weekly sheet, 14-day plan and capture list) and three bonuses: 18 break cards, a study sheet with spaced reviews, and a six-rules poster with door signs.
Every study cited comes with its full reference. Educational material: it doesn't replace advice from a doctor, psychologist or other professional, and no method guarantees results.