It's easy not to realise how much talking must go on during the course of five-and-a-half hours on the bike amongst the rest of the riders of the peloton, and as a team leader it's particularly crucial to keep in communication with the rest of your teammates.
Stage 18's on-board footage from the 2015 Tour de France, which saw the riders take on the climbs of the Col du Glandon and the Lacets de Montvernier among the seven other categorised climbs on the route from Gap, shows Team Sky's Chris Froome telling his team to take it easy as they pushed the pace on one of the climbs.
There's also a host of impressive descending from the stage, with riders already showing in this Tour that they're able to hit up to 100kmph on some of the downhills.
The Velon on-bike footage also gives an insight to the climb up the newly included Montvernier, with it's narrow roads and many hairpins as the riders make their way to the finish in Saint-Jean-de-Maurienne, where Ag2r's Romain Bardet soloed to victory.
Tour de France stage 18 highlights
