If sports and related activities is your thing, there is a lot you can do in Sri Lanka. Golf, angling, water sport, trekking, adventure sports (white water rafting, deep-sea diving, etc.) sailing, biking, are a just a few of the sporty possibilities.
Cricket is the most popular option for pros and amateurs. The second most popular is rugby, affectionately known as "rugger" by locals.
Being an avid cricketing nation, Sri Lanka has several world-class cricket grounds and international stadium facilities.
Sporting events take place in Sri Lanka throughout the year, with one-day cricket matches, inter-school rugby football or 'rugger' matches, elephant polo, etc. You can have something to do or view, in sports, whenever you feel inclined.
Highlights on the Sports Calendar:
The Sri Lanka events calendar can help you keep track of events.
Gym culture is not that widespread in Sri Lanka. Most Sri Lankans prefer walking for fitness rather than following a regularized gym regimen for keeping healthy.
However, in Colombo there are several gyms available, mostly targeting the expat population. For one month's full gym membership, you would have to pay Rs.5000, approximately. There could be packages available with various work-out combinations suited to your particular need.
For gyms, see www.srilanka.com/colombo/colombocategory/CC00034