Running

Cross-country skiing

• Skating
  • k2nicol: Cross or X Country Skiing-Free Skate Technique 无棍训练方法，含常见错误及纠正方式
  • mcbikesmithers: Skate Skiing Getting Started – Part 1 to 8

Gym

• Squat University: How to Get Your First PISTOL SQUAT (Step-by-Step Progression) 手枪蹲，循序渐进练习方法

Alpine skiing

• SKNG Ski School – Beginner/Intermediate/Advanced/Expert Ski Lessons

Etc

• skadefri.no: langrenn(Cross-country skiing)