Question: Hi! My 4 year old son gets extremely red cheeks, flushed and just looks exhausted from mild outdoor t-ball games especially in comparison to others his age. He also gets tired easily, is heavy & muscular, and is a poor runner. I have not had him involved in team sports up until now so when I saw the difference between him and his peers on the team as well as all of the other teams, I was shocked!! I work in early childhood as a behavior specialist and did notice in the past that he wasn't swinging his arms properly while walking but my pediatrician blew me off as usual. He is heavy/chubby and very muscular since the day he was born. His grandfather has the same build. He is square like a lumberjack or powerlifter. I have hashimotos thyroiditis and had gestational diabetes while pregnant with him. Also, he shows very poor sports endurance during indoor activities but he does improve in balabce exercises quickly. His fine motor coordination is also fairly poor and he complains of fatigue completing activities. He plays energetically with his sister in short bursts of time, and is very verbally intelligent with a great sense of humor.