Avoid pressure on the birds body. :)
Self esteem is when you are confident in yourself and someone with self esteem keeps their head up and has a positive confident outlook on life.
I think that oxygen is needed , because it helps elevate the blood level and help oxygen spread to your brain/ heart.
The minimum amount of aerobic activity that one should engage in is 30
minutes 3 times a week, less than 30 minutes will not be effective.
