http://www.virtualrealityglassese.com/sport/the-best-skiing-gps-watches-hud-goggles-action-cam - hi tech ski jackets
http://www.virtualrealityglassese.com/cameras/best-wearable-action-cameras - head mount camera
http://www.virtualrealityglassese.com/running/how-to-use-garmin-polar-calculate-hrm-max-heart-rate-training - training for running
http://www.virtualrealityglassese.com/running/week-9-sophies-couch-to-5k-diary - couch to 5k app android
http://www.virtualrealityglassese.com/running/polar-flow-ultimate-guide-to-becoming-a-better-runner - polar training load calculation