Zone 2 runs (slow runs) are actually important. They may feel like the are pointless. You’ll leave sessions feeling amazing. Feeling like you didn’t do anything. But something is happening inside your body. Zone 2 running increases both the number and efficiency of mitochondria — the “energy factories” in your muscles. Zone 2 teaches your body to burn fat efficiently. Zone 2 improves your ability to: • Clear lactate • Recycle it as fuel So when you do run faster: • You accumulate fatigue later • Your threshold pace naturally moves up #zone2 #runners #runningtips #fitness