Do as much as you can. Every step counts. If you're just starting out, start with 10 minutes a day and add more little by little. Work up to 10 minutes at a time, three times a day. You can also try for 15-minute spurts twice a day. Also if you don't have enough time to do a complete workout then you can just walk
It is referred as <span>zone of proximal development. The zone of proximal development enables a person to distinguish what he or she is capable of with help towards others and without it. It is somehow related to the given sentence above where it shows how children can do on their own and with the help of another person.</span>
Pretty sure it means brain, cerebral, or cerebrum!