More stamina required

Last pilates class before Xmas today. Core is still burning. Out at ratho tonight for 4 sets of 3 by 3's. Got way too pumped on the second set due to poor warm up but the final two sets were perfect. Rosco making a good dent in his 7a projects. Need to work hard to keep up. Feeling a bit snotty but hoping it won't come to anything.