All sports including walking, jogging, running and, indeed, many other forms of exercise require core strength to protect against injury.
There are many things that will assist in reducing the risk of injury in the early weeks of jogging or running. Basic stretching and strengthening exercises will help you prepare.
Stretching should be performed slowly. Hold each stretch for at least a count of 10 and repeat a couple of times. Stretching will get easier and feel better each day it is performed. Over a period of days, hold each stretch a little longer to increase the flexibility. Strengthening exercises can be performed after a day’s walk, or around the same time as the core strength and stretching exercises.