
Anybody regularly riding in groups - in sportives, training or in those nervy early season races - needs to watch this clip.
It was recorded on stage 1a of the Vuelta a Andalucia pro race in Spain last week.
And it really captures how the simple mistakes we see so often in the domestic bunches can cause serious damage.
In the clip, Vasil Kiryienka of Team Sky looks around him.
The instant he does that, his bike changes direction and he veers into the middle of the road.
At exactly the same time, Blel Kadri of Ag2r-La Mondiale is just behind him glancing down at the ground.
With neither paying attention, just for the most fleeting of moments, they bounce off each other, Kadri falls and the damage in the fast moving bunch is absolutely devastating.

On the front of the bunch, Kiryienka looks to his right and veers left as a result. And he goes right into the path of Kadri, who has his head down in this still.
Both riders suffered a lapse in concentration, but Kiryienka moved significantly off his line and most of the blame is his.
To add insult to injury, he didn't even fall off. Watch how much his bike moves the minute he looks behind.
Some riders in early season races are like meerkats looking around for their buddies, to assess the state of the group behind, or simply through nerves.
Just don't do it in a race and don't do it in a sportive or training either.
Also note in this clip how the front of the bunch is stalling while the line-out at the back is flat out trying to get back on.
This is what happens with the 'purge and stall' racing of the early season and it is dangerous enough in itself.
Don't start looking around or wildly changing direction when this kind of movement is already going on.
Life is hard enough without leaving half your skin on the tarmac, not to mention a broken carbon bike costing thousands.
Relax and focus at all times.
