Hasta La Gadget!

Heel pain, particularly sharp and often excruciating, may be due to
plantar fasciitis (PL), a condition caused by over-stretching the soft
tissue that cushions the bones of the heel and the arch of the foot. 
Many runners get PL from pounding on the heels of their feet when they
run, but most cases of PL are caused by inactivity, like standing
on your feet all day without much movement.  It is most common in
middle-aged to older persons who are overweight and/or inactive.