I've recently made the switch to 1x10 (32t - 11-36 cassette)
I am by noway an unfit rider, the group I ride with all push it on the climbs and I'm usually mid pack, with only 1 or 2 of them using 1x10. The rest 2x10.
Any advice from people who have gone from 2x10 to 1x10, whether it be training related or technique etc. I've found that I have had to get out of the seat a bit more on longer climbs to work different muscles.
I'm a lightish rider at 75kg with kit.