Hi Lee. This might sound obvious but everyone is different and will feel it in different ways. Fact is though if you up your training beyong your usual comfort zone, for an upcoming race or to try and bust a pb for instance, you will feel it and must expect some soreness and aching as your body adjusts. Monitor it though and if you feel you are not adjusting to the increased pace over time but are constantly aching, and certainly if you start collecting a lot of niggly injuries, then you are probably overdoing it and need to back off or take a well earned break. Good luck.

thanks lauren, heavy legs and feeling tired is a defo, i knew something was'nt right.

got a big bike race on next week so its all been legs and i think iv over done it.

thanks for the help.

Tiredness, aching or heavy legs, loss of motivation, loss of speed, increased injury... increasing training too much, basically. Any of that sound familiar?

If you're feeling a bit knackered, take a few days off or try swimming or cycling instead to give your legs a bit of a break. I can always tell when I've overdone the running because my shins and ankles get sore and my legs feel really heavy and tired even when I'm in bed.

what are the signs of over training?