This morning's swim plan was to make an effort to do pairs of lengths with as little delay in the turn around as possible; but allowing rest between pairs. It felt to go quite well although I was still counting to 5 rather than heading straight back.
I thought that I had done some good times on lengths but the figures once home don't support that. The only clear factor that I can grasp is that I don't experience the tingling fingers that used to affect me after double lengths. I never worked out if it was caused by hyper or hypo ventilation but it must be better to not have it! Maybe if I eliminate the counting pause or strive for triple lengths it will return. A task for Monday perhaps.