My arms are soooooooo tired

Yesterday was my first day of solo chainsaw work. My husband decided I was proficient enough to go solo, without him standing next to me, guiding and supervising. This oak tree was really big. I worked on cutting off the leafy part of the branches, then cutting the limbs to size. I could only cut for about 15 minutes at a time, my arms would get tired and I'd have to stop and lug brush for a bit. My left bicep is very sore today, but it is loosening up. I hope to be able to cut longer next week and not be as sore the next day. Looking forward to keeping toasty warm this winter with the wood we cut.