last year was very bad for me, at the start of Jan i was 87kg, I’d put on about 10 kilos since November. lots of hard work followed, and after getting to about 75 kg, a good, but not great road / TT season followed, winning a crit and doing well in quite a few TTs
I’m now 71kg (I’m 5’11) and I’m happy I’m where I need to be for the cross season, and then hitting next year running rather than wobbling. I’ve already started a 20 week TT training plan, so, In answer to the OPs question, if I’m not careful I put on loads, but this year I’ll be staying exactly where I am…