The Swedish cross-country skier Daniel Tynell placed 2nd in Vasaloppet 2012. In preparation he used Firstbeat SPORTS recovery test with his coach Christer Skog to adjust the training program on daily basis before the race. The data was collected 24/7 during the last 30 days before the race!

Read the whole use case here to see what information this systematic HRV data collection can provide from the body when preparing to long distance events.