Maintaining good posture is key if you want to hit your maximum height potential. Remember to sit with your back straight and stand proud with your head up high at all times. A slouched stance will only make you look shorter, not to mention insecure.
Keep in mind that, as a general rule, short hair works best for shorter men. Long hair tends to hide the neck and shoulders, making your head and body look like one body part, which doesn’t help you in your quest to look taller.
Another tip to maximize your stature is to stay fit and trim at all times. Heavier and extremely muscular men tend to look broader and stubbier, but staying lean and having some muscle (such as built, defined shoulders) can help add some height to your overall frame.