Lumberjacks typically spend long hours working with heavy equipment. This kind of work provides an excellent muscular and cardiovascular workout. For example, a logger will usually work an eight- to 10-hour day outdoors, wielding a chainsaw to chop down the trees in the area. This work requires heavy lifting, and builds up a lot of muscular strength. This is part of why "lumberjack competitions" have arisen as a popular sport in many parts of North America