keep (sb) fit

udržovat se v dobré kondici

Keep fit and run for the charity which values your contribution. (BNC) 

If you want good beaches and good nightlife, but also want to keep fit during your holiday, Dassia is an excellent resort. (BNC)

I have no doubt that I will carry on running to keep fit but there is a difference between that and training to race well. (BNC)

» HEALTH