In the charming streets of Manila, it’s not hard to spot someone who smokes. Holding a cigarette while scrolling through their phones, or going through their daily routines while sipping a cup of coffee, smoking is arguably one of the worst habits a person can develop.

If you are currently a smoker and is also doing physical workouts like running, swimming or biking, at one point you'll actually feel that smoking is really holding your performance down, aiming for that full-marathon? Then start by quitting the habit. Here's some tips you can use.