You 've done a number of races through the season so you should know what to do for a warm up .
If you do n't do a warm up then you are placing yourself at a disadvantage and risk panic attacks in the water and uncomfortable HR spikes .
You 've done a number of races through the season so you should know what to do for a warm up and if you do n't do a warm up then you are placing yourself at a disadvantage and risk panic attacks in the water and uncomfortable HR spikes .