“
#Zone2 is often considered the lowest intensity that produces meaningful
#training adaptations. It’s receiving a lot of attention in the
#running community because it has a lot of benefits with very little risk of over-training or injury. But this is not new"
"While it’s vital, it’s just one piece of the puzzle”
"Any good
#training program should include a healthy mix of all zones because these energy systems all contribute to an
#athlete’s ability”
https://run.outsideonline.com/training/zone-2-is-important-dont-forget-the-other-stuff/