Some speculation that
"[font=arial, helvetica, clean, sans-serif]Smoking cessation significantly enhances [/font]
[font=arial, helvetica, clean, sans-serif][/font]HRV[font=arial, helvetica, clean, sans-serif] in chronic male smokers, indicating improved autonomic modulation of the [/font]heart[font=arial, helvetica, clean, sans-serif]. Results suggest that these findings may be primarily attributable to nicotine discontinuation rather than tobacco smoke discontinuation alone."[/font]http://www.ncbi.nlm.nih.gov/pubmed/23397454Worth noting. Poor HRV = chronic stress. Chronic stress = poor body composition/physical & mental performance.(HRV = Heart Rate Variability. Higher Heart Rate Variability is correlated with lower mortality rates, less risk of stroke or heart disease)