Just looking for some advice or knowledge from some of the members with experience in conditioning.

I have a bitch in a keep and after her mill work her legs tremble like a fast twitch, just wondering if anybody has any idea what causes this or how to prevent it or even if it's something I should worry about? My worry is the bitch suffering from cramp at the wrong time.

The bitch isn't sprinting the mill, she's walking/trotting at an intense pace.

Any input will be greatly appreciated guys.

Cheers.