Is rowing a good physical sport?

Answer 1

yes, for the most part it is. just depends on your term "physical"

great for arms,bt poorly on legs

How can you say it is poor for legs, when most of the power for rowing comes from the legs? Rowing is an excellent exercise that involves almost all of the major muscle groups and develops both muscle strength and cardio-vascular endurance.

Rowing is a fantastic sport physically because as said, it uses all the major muscle groups, your core, arms and legs are all important factors, as well as this it works on the cardio-vascuar system. Rowing is also a low-impact sport, and if you have good technique you could spend years rowing without an injury unlike many other sports. Another aspect of rowing which people often over look is it's balance benefits.