Nick500

Have you noticed that ephedrine, clenbuterol, albuterol all have original uses as treatments for:

'shortness of breath, and troubled breathing caused by asthma, chronic bronchitis, emphysema, and other lung diseases. Albuterol inhalation also is used to prevent breathing difficulties (bronchospasm) during exercise. Albuterol is in a class of medications called beta-agonists. It works by relaxing and opening air passages in the lungs, making it easier to breathe.
"

for example.

Why is that beta-agonists raise the metabolic rate?

does anybody know more about what these drugs are actually doing?

Nick