Let me please answer first to the second question: I’m fine. Castells didn’t hurt me. It’s just that it has been Christmas holidays, I had troubles with my computer, I had to took it to the workshop, and I am a tad lazy sometimes.
About the first question, there is a huge concern about safety and health within the casteller environment. Castells are an amateur activity and an injury can inflict in the personal or professional life of the castellers.
Although, Castells are relatively safe. And when I say “relatively” it’s because there is no human activity, sport or tradition with risk zero. And castells, although it has improved its safety standards, are not an exception to it.