What is the most physically demanding sport in all aspects of fitness?

Cardio Respiratory Endurance(How much you can work the heart and lungs,eg Running) , Muscular Endurance, Strength etc

I would say boxing because they need all round fitness what would do you think?

Andy :)What is the most physically demanding sport in all aspects of fitness?altough it is considered a art form the worlds best athletes are ballarinas. no question about itWhat is the most physically demanding sport in all aspects of fitness?
Women's artistic gymnastics- you have to have muscular endurance for bars because you are constantly using the muscles in your arms and beam because you are constantly squeezing you muscles to stay on and keep good form - straight legs and pointed toes. You need power for vault. You need cardiovascular fitness for floor exercise. You need superb flexibility. You must have a very good condition and overall strength because all muscles are used. You must have great spacial awareness. You must be a master of your body and have full control. But above all you must train super hard at a young age to achieve perfection - the youngest elite I have seen is nine years old (Shallon Olsen).

If you don't believe how hard this sport is just watch the parkettes documentary on youtube.What is the most physically demanding sport in all aspects of fitness?Definetely rowing- you work on EVERYTHING, seriously. Which is why it's so tiring.What is the most physically demanding sport in all aspects of fitness?
Boxing defo, rugby union would be up there 2What is the most physically demanding sport in all aspects of fitness?PAINTBALL XDWhat is the most physically demanding sport in all aspects of fitness?
Ice Hockey
i would say rugby