Originally Posted by
Trakhak
Braking works much better when your hands are far apart enough to provide lateral stability. I've had aero bars on most of my bikes for decades, and I find I spend much less time in the aero position out on the road than I expected to. Straight road, no hills, little or no traffic, and I'm on the aero bars, but that ends up being much less than 50% of each road ride.
It is by no means an excuse to not be equally as careful as I was before, but once I got my Garmin Varia radar this changed for me. Years back before owning it, on the TT bike that was me. It had to be pretty flat, low traffic, and straight. I got the radar and could be more aware of vehicular traffic I was able to stay in the extensions a lot more.
It's probably not necessary totally to increase the time spend from like 50% to 75% or 95% in aero for that training stimulus, but it's just more fun to go fast.