Arrhythmia meaning the heart is beating too slow and or its beating too fast
Secondhand smoke (SHS) has the same harmful chemicals that smokers inhale.in dust and on surfaces and remain there long after the smoke is gone. ... any effects would probably be small compared with direct exposure to SHS. ... No actual cancer risk has been measured at this <span>time</span>
Gravity and Inertia is the answer
Respiratory system hope i helped best of luck :)