If your load is heavy, consider carrying butane tanks up flights of stone stairs every day. Because Guanajuato is a configuration of walk streets with little car access, laborers must hand deliver heavy loads to homes and work sites.
We saw a man carrying three water bottles (the giant size for water coolers.) One on each shoulder and one on his head. We marvel at their strength, agility and endurance.
MedFlies 
You two make a great blogging team. Think I’ll go carry a cup of tea up the stairs, or maybe some clean laundry. Thanks for the inspiration.
It is all relative, isn’t it?
Good observation and great photos to go with them! Good to have MedFlies back again!