1. Walking helps you burn calories, which can help you maintain or lose weight.
Your actual calorie expenditure depends on factors such as walking speed, distance traveled, terrain and your weight.
2. Walking strengthens the heart.
Walking at least 30 minutes a day, five days a week, reduces your risk of coronary heart disease.
Increasing the duration or distance of your daily walk can further reduce this risk.
3. Walking reduces blood sugar levels.
A short walk after meals can help lower your blood sugar levels.
Studies have shown that a 15-minute walk after each meal improves blood sugar levels.
4. Walking soothes joint pain.
Walking protects joints, especially knees and hips, by strengthening the muscles that support them.
It can also reduce pain in people with arthritis.
5. Walking boosts immunity.
Walking can reduce your risk of colds or flu.
One study showed that adults who walked at a moderate pace for 30 to 45 minutes a day had fewer and fewer upper respiratory infections.
6. Walking increases energy.
Going for a walk when you're tired can be more effective at boosting your energy than a cup of coffee.
Walking increases the flow of oxygen in the body and stimulates stress hormones, such as cortisol and adrenaline.
7. Walking offers real psychological benefits.
Walking reduces stress.
It allows you to sleep better, to be in a good mood, to stimulate the imagination, to solve problems, to discover many landscapes, to reconnect with nature
Non-exhaustive list.
In summary, walking is simple, free and easy to integrate into your daily ritual.
Sources: personal practice and on 10 Benefits of Walking, Plus Safety Tips and More (healthline.com), Walking: Trim your waistline, improve your health - Mayo Clinic.