Explanation:
Physical activity means the movement of a body that utilizes energy.
Physical activity is necessary for healthy health and it is particularly important if someone wants to lose weight or wants to maintain weight. 
If we increase our time spent doing physical activity it will influence our diet because as when doing physical activity our diet gets increased and we feel hungry so by planning a healthy diet and eating healthy foods we can keep our body fit.
Physical activity burn extra calories and helps to develop muscles.
If we do a physical activity this will help to decrease the fat present in our body and waist this will slow the development of obesity.
 
        
             
        
        
        
Answer:
The correct answer will be option-many antibiotics cannot penetrate the blood-brain barrier
Explanation:
Meninges is the membrane which surrounds the spinal cord and the brain and the infection of the meninges is thus called meningitis and Encephalitis is the inflammation of the brain. These two diseases are caused by the micro-organism which could be viruses, bacteria or fungus.
The treatment of the disease is difficult sometimes as the entry of the drug into the brain through the cellular membrane of the capillaries is inhibited like in the case of penicillin which is polar and finds difficult to cross the membrane.
Thus, the selected option is the correct answer.
 
        
             
        
        
        
Hi am omar and the answer will 
To run faster