After several weeks of no core sessions, I did some circuit training tonight. By my first set, about 20 tricep dips in, I was struggling and realised I'd lost the strength in my upper half, and by the fibres that were twanging I was already in a position where I'd be aching the next day. I completed the whole hour's session, but not without stopping for a few breaths before half the 90 second reps were over.
I'm a runner whose average outing is 7?8 miles, that's my pleasure, and as much as it keeps you slim all round it doesn't really tone you anywhere above the glutes. Things beyond my control ended the circuits I'd been doing until July, and having not used my upper body for strenuous activity since, it's obviously defaulted into feebleness. (I also have little motivation to do this in a room on my own, jailbird style. The longest I've kept up core work on my floor has been about two months before getting exasperated and bored.)
In winter for example I chop firewood from already fallen trees, which can take a few hours, and the day after my forearms especially will be sore. Other than that I'm not doing any regular activity that will build my core and arms. Does anyone here get up to anything that tones their upper half which has other productive ends? It doesn't have to be anything I can apply myself, I'm just fascinated.