Although everyone has their own unique, individual gait, certain common behaviors can improve almost everyone's walking experience. Chief among these is your posture. As you walk, keep your head upright, your back straight, and your chin up. Maintaining this posture will keep your spine straight and help you breathe by taking pressure off your diaphragm. Resist the urge to hunch or slouch as you walk. Over time, bad posture can lead to back pain, a stiff neck, and even more serious maladies. An effective walking motion uses nearly all of the muscle groups in the leg - not just one. As you walk, visualize pushing off with your back foot using your hamstrings and quadriceps and propelling yourself forward onto the heel of your other foot. Roll your foot forward, heel-to-toe, as you make your step. This brings your calf muscles into play - use them to keep your feet at the correct (elevated) angle for each step. Even though the majority of the muscles used to walk are in your legs and core, you'll still want to keep an eye on the posture of your upper body. Keeping your shoulders in a relaxed, pulled-back position serves several purposes. It maintains a stable, "vertical column" of support while you walk stretching from your neck to your hips. This works in conjunction with a straight back and an elevated chin to minimize the strain on the back as you walk, preventing injury in the long-term. Also, it's simply a good habit to get into to prevent slouching, which, as previously noted, can result in shoulder pain  and strain. Finally, pulling your shoulders back makes you look good by projecting confidence and strength. This is a small but not insignificant point - why look mediocre while you walk when you can look great and protect yourself from injury in the process? For most, this should be second nature. As you walk, let your arms hang naturally at your side. Your arms should begin to swing in small arcs as you start to walk - the quicker you walk, the larger the arcs. Moving your arms is a natural part of...

TL;DR in Indonesian:
Biasakan berjalan dengan tubuh yang tegak. Gunakan otot betis, paha belakang, dan kuadrisep agar Anda bisa berjalan dengan baik. Tariklah kedua bahu sedikit ke belakang, tetapi biarkan tetap rileks. Ayunkan lengan selama Anda berjalan. Mulailah berjalan dengan melakukan pemanasan sambil mengatur kecepatan. Setelah melakukan pemanasan, tingkatkan kecepatan berjalan sampai intensitas sedang. Lakukan pendinginan setelah selesai berjalan.