This post is inspired by a quote by Adharanand Finn, who remarked that “Running is a simple activity. Just lace up your shoes and go, one step at a time, like each breath”.

In contrast, a Sport Bra Workshop advert makes the point “you wouldn’t run in any shoes, so [women] don’t run in any old bra. A good sports bra is as an essential a piece of kit as a good pair of running shoes”.
When starting off running (or walking) it is important to eliminate discomfort, to have a positive experience, in order to repeat the experience.
A pair of comfortably fitting running shoes (and good socks) are essential. An important reason is to eliminate blisters. I invested in specifically designed running socks. Also expanded my shoe range to road running and trail running, while keeping the former shoes for walking.
A quick-drying moisture-wicking-fabric top is recommended. Becoming all sweaty is not only uncomfortable, but could become quite cold when it is windy. Cotton clothing, for example, captures moisture. I prefer sleeveless in summer; a T-shirt in autumn and late winter; and full sleeves in the cold of winter. When it is really cold, a second layer is advisable.
Preferences about bottoms differ, as does seasonal preferences. Non-chafing comfort, however, and adjustable waistband for preventing slipping-off as one loses weight, are important considerations. I opted early in my journey for high-stretch-fabric shorts. Initially, mostly to prevent chafing. I wore such tight-shorts in winter under sweat pants. I subsequently acquired long tights for winter and funky-pants shorts for summer running.
Initially, hydration during walking or running is quite necessary. A 500ml water bottle that fits comfortably in the hand is recommended. Initially, I used to drink an entire bottle. However, as my fitness level improved, so did my thirst reduce. When I found I hardly drank any water during a run, I started drinking a glass of water before and another after, instead of taking along. Later, as I increased distance to 10 and more kms, I started adding rehydration supplements to my post-run drink.
In order to prevent injury, I early on started my run with a range of stretches, focussing on feet, knees, back and upper body. With increased level of fitness, body aches reduce.
Initially, I would wake on a Saturday morning, dress and go for parkrun (walking). Those days I had plenty of reserves to draw from. As I transitioned from obese to overweight and ultimately getting to weight-range, I found that my body needs nourishment for a race. However, a number of unpleasant experiences prompted me to search for information on running nutrition. For example, I experienced severe intestinal cramps a few times as result of having consumed inappropriate food, urging me to walk, instead of running. On a few occasions I felt heavy, I could not achieve my usual pace. Other occasional experiences include feeling bloated and the embarrassing passing of wind during a race. Regular running requires lifestyle changes.