By Swami G
Cycling a sport of pacing. End of story. If you're doing the third pedal stroke of a century, you are already preparing yourself for the pacing it requires. If you're going to try a heroic last-lap attack in a criterium, you better know how long and hard you can put out that maximal effort. If you're going to beat the hour for 40K, you should know what riding at threshold feels like.
For me, I noticed that in my race photos I rarely ever had good contact with my back (though this is part fit, part discipline, especially 3/4 into a TT). I went to Nytro in Encinitas, CA and tried on a few different TT helmets. To further illustrate, I went from this: