Marathon/long distance running, long distance swimming and cross country skiing are the obvious answers, but Basketball, Rugby and other high intensity sports like that also require a high level of cardiovascular fitness.
The American College of Sports and Medicine (ACSM) includes certain guidelines to enhancing muscular fitness. This includes resistance training and aerobic fitness.
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aerobic fitness, muscular endurance, muscular strength and speed
Those are the 5 fitness ares!(:
wala
cardiovascular fitness, strength, muscular endurance,flexibility, and body fatness
By doing sports that require fitness and get your heartbeat up then you burn calories and lose body fat. You can also tone your body and get into a more muscular shape by doing exercise
Almost all sports need muscular strength of some type or form. For example even in running it is important to train the muscles of your legs. If you mean dense muscle, sports such as shot put and perhaps boxing are sports that require muscular strength.
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Fitness equipment can be found at several different retailers. If you also need information or instruction I suggest going to a sports equipment store such as MVP Sports or Sports Authority.
It is possible to take muscular development training classes to know about muscular development. Iron quest fitness, Shape sense, Total Joint Fitness are some of the good places for knowing about muscular development.
I think a level of fitness you need is to do a lot of practical sports in order to be a qualified tennis lime umpire.