"Cotton is not your friend. Get some wicking t-shirts to combat the heat."
I'd say that's the
worst advice I've heard on BF over and over. Crappy plastic poly-tech shirts smell like crap in about 5 minutes and don't breathe worth a darn, so they actually
make you sweat and then
have to wick something away
.
Cotton is great stuff, especially in the summer heat when it gets damp and pulls heat from the body -- I actually pour water on my shirts for this purpose in the heat.
For what it's worth I also wear cotton on my long commute all through the winter. Wool sometimes.
Back to topic: "You can bicycle in any way that works for you"