Walking to maintain muscle tone, reduce risk of osteoporosis

The best exercise that we should follow is Walking.
The above image says the benefits of walking.
Walking should be brisk and fast to reduce weight.
Its the best way to increase body metabolism.
It  decreases the risk of osteoporosis.
To save bone and to postpone ageing, walking is essential.
It removes the toxins from our body.
Walking releives stress and gives you good sleep