It’s a running technique for someone who hasn’t run in a while or is new to running.
As the name suggests. You run at a low intensity until you get tired and then resort to walking. Walk until you recover and then begin running again. Keep doing this for the mentioned time or distance.
When I started running first, I didn’t think about distance or speed. I just ran for 20 minutes for the first week, a mix of walk and run, then slowly increased the duration of running to 30 minutes and so on. By the end of the month, I could run continuously for 30 minutes. My aerobic and muscular system got conditioned.
The reason for this is simple. Your aerobic system and muscular system aren’t used to this new activity. Thus it leaves you gasping for air and makes your muscles tired faster. The only way to go about this is slowly building a solid foundation.
For sustained running or running continuously, we need to focus on building the base. The base building phase is mainly doing low intensity efforts at higher volumes.
Practice 