More keeping fit while clearing litter
New form of exercise called plogging draws S'poreans, amid rising concern for environment
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Elijah Wong
Having been in the army for 30 years before becoming a physical education teacher for 18 years, retiree Kok Wai Tong has always led an active lifestyle.
In recent years, the 73-year-old has picked up a new form of exercise called plogging.
