According to Runner’s World, spending 10 minutes a day doing core exercises in a combination of eight movements will help runners improve muscle strength and flexibility.
The exercise recommended by Runner’s World for runners is a combination, including dead bug variation, heel-tapping with dumbbells (heel tab with dumbbell), knee plank combined with inchworm inchworm to plank knee drive), cross single weight lifting with staggered legs (split stance with reverse chop), reverse mountain climber, weightlifting combined with single weight lifting in Y shape (single leg balance with Y) hold), reverse cycling with dumbbell bicycle with press and sprinter sit-up.