Suuntoさんのインスタグラム写真 - (SuuntoInstagram)「Want to get faster, more powerful and stronger as a trail runner? Then interval training is essential. World champion trail runner and coach @stianangermund lays out the what, why and how so you can approach it the right way for the best results. ⁣ 🔺Tap the link in the bio for our guide to interval training.⁣ ⁣ #Suunto #AdventureStartsHere」3月28日 19時46分