After months of movements reduced to the bare minimum, closed gyms and swimming pools, impracticable sports and, at most, a few walks around the house, we may need to reactivate the muscles of our legs and strengthen them while, at the same time, acquiring new postural skills to perform at best, and without injuries, the “weight lifting” activities that we normally do at home by picking up a child or a grandchild or, for example, shopping bags at the supermarket.