You inhale when contracting muscles and exhale when finishing a rep.
<span>While all four of the items and factors listed are, in fact, known carcinogens and thus capable of causing cancer, only one meets the definition of a pathogen, which is an organism, such as a virus or bacterium, which can produce harmful effects. That factor is item d) human papillomavirus or HPV, which is a root cause of cervical cancer.</span>
If one person from your close family has cancer it could pass down In your dna or genetics so yes
