How To Crush Low Heart Rate Training With William Barth (70 years young)
13 Dec 2024 · 1 min

0:35
In this segment, the speaker (William Barth) explains his experience with low‑heart‑rate, or MAF, training. He describes running in a completely relaxed, low‑intensity state—so relaxed that his heart rate stays low and he feels no strain—yet he still achieves strong performance, "crushing" his workouts. He emphasizes the core MAF principle that running slowly (at low heart rates) ultimately makes you faster, a concept he calls the truism “run slow to get fast.” Drawing on his lifelong competitive running background—including marathons, 5Ks, and 10Ks—he argues that this method can dramatically improve race outcomes despite its seemingly counter‑intuitive, easy‑going approach.










