Duolingo has lessons that take 1-5 minutes. It's so small amount of time, that I feel, I literally cannot excuse not doing it every day. This is unachievable if

Duolingo has lessons that take 1-5 minutes. It's so small amount of time, that I feel, I literally cannot excuse not doing it every day. This is unachievable if I had to deal with less packed way of learning. I took a few weeks long initial course to get a grasp of grammar for my third language and since then I'm using Duolingo daily, for a few hundred days now (so it costed me well under 100 hours in total). I'm far from fluent, but able to communicate verbally, work with text and I don't forget what I learned. If that's the bottom of the barrel, I wonder what was my public school program I had in the past (yet another language), that included many semesters of learning and left me with handful phrases.