Quick Swimming Question

[Saxon]

If I swim for about 40 minutes, five times a week, will i be overtraining? I swim aggressively and feel a burn in my pecs and upper arms after a swim, should I be giving myself more recovery time or is that unnecessary when doing such a low resistance exercise? thanks for your imput

[CJNY]

This is probably not going to cause problems but it depends on lots of factors such as diet and what ever else you are doing.