Enhancements such as doping are illegal in sport — but if all restrictions were lifted, science could push human performance to new extremes.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/superhuman-athletes
[2] http://admin.indiaenvironmentportal.org.in/category/author/helen-thompson
[3] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/games
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drugs
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-kingdom-uk