1.B without regular cardio workouts, you will have a very hard time breathing
2.B all of those CAN give accurate info, but gov. studies are best due to the amount of people they question
3.C the AHA does reliable experiments that proves helpful
4.D gov wellness sites usually give old or washed down advice
5.B if your muscles aren't used to physical activity, they will respond a bit more "aggressively" for lack of a better word
Answer:
https://www.csn.es/radiacion-natural-y-artificial2
I'm not sure if I understood correctly your question .
Two ways HIV/AIDS not spread through sex ...
By blood transfusion (there was a scandal in France and other countries in the eighties ....many people got HIV because of this ; it was called the scandal of contaminated blood...)
The other one could be a fight between two people with severe bleeding injuries; if one of them is HIV, it may contaminate the other one.
Or someone willing to help and look after a cut, if this person has a small cut as well, he may be contaminate by blood.
As blood is the only way of contamination, people have to be careful when helping someone bleeding if they are bleeding too.
Usually, in hospitals, dentists, they have to use gloves
Hope I helped
