Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Finally the answer to a very interesting question – concerning the menstrual cycle

Why do groups of women living in the same household have synchronous menstrual cycles? At last my question has been answered, and it is as I thought – to do with social groups and our evolutionary past. I speculated that it may be chemicals like pheremones that cause the synchronisation, but I did not know the exact evolutionary reasoning behind it.


Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Undefined variable: todo_styles in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120

Notice: Trying to access array offset on value of type null in /var/www/html/wp-content/plugins/bwp-minify/includes/class-bwp-minify.php on line 3120