Sonja HöslmeierView Profile ›› 10 min read The 60-to-70-percent-MaxHR rule of thumb fueled the Zone-2 wave of recent years. It’s also why so many athletes run their easy sessions either too...
9 min read Whit Monday, the first long stretch of spring sunshine, and you’re hunting for a route where the via ferrata at 2,400 m doesn’t still...
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