For many millennials, fitness has become more than just a way to stay healthy. From joining running clubs to chasing personal bests, staying active is increasingly becoming part of their lifestyle.

When the haze made outdoor exercise difficult, a group of runners took their workouts indoors at Marina Square, with one completing a half-marathon and another clocking 19 kilometres.

So how are millennials approaching fitness today and why are some so determined to keep going even when conditions are less than ideal? 

On The Agenda, Hongbin Jeong speaks to Joseph Estrella, Retail Associate at Key Power Sports and Run Lead at X-Run Singapore; Nathan Jon Sing, Senior Analyst in the Public Sector; and Elmer Loy, Manager at Great Eastern Life, about what drives their commitment to running and whether attitudes towards fitness are changing among millennials.