Biking is considered a valuable sport since it protects your heart. This aerobic way of moving improves your health because it helps oxygenated blood to be pumped by the heart to deliver oxygen to the working muscles, mainly those in your lower part in your body. For this reason it forms part of the “cardio-sports” which improve your cardiovascular fitness. Another characteristic is that it benefices your muscle formation and toning. Also, by practicing it regularly your life-years are increased (wow!) (http://www.ncbi.nlm.nih.gov/pmc/?term=10.1289/ehp.0901747) as well as you better your mental health (http://www.ncbi.nlm.nih.gov/pubmed/17314466?ordinalpos=2&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum) and your immune system (http://familyonbikes.org/blog/2011/06/the-health-benefits-of-cycling/). Moreover, you coordination improves as your are constantly moving both your legs and your hands. There is no need to spent hours and hours on the bike to feel its benefices, just a few minutes. Nevertheless, aerobic exercises such as biking can become anaerobic if performed at a too high intensity level.