i wrote and then deleted a comment. I work in consulting and I'll just say that tears on conference calls are rare but do happen from time to time.
I've seen it at the bottom of the org chart all the way to almost the very top and even client side. It's not uncommon for race cars to be pushed until the engine blows and it's not uncommon for people to be pushed (or push themselves) beyond what they can bear. Everyone has their limits and there's no shame in reaching/crossing them. I've been there and it sucks, it really does.
I've seen it at the bottom of the org chart all the way to almost the very top and even client side. It's not uncommon for race cars to be pushed until the engine blows and it's not uncommon for people to be pushed (or push themselves) beyond what they can bear. Everyone has their limits and there's no shame in reaching/crossing them. I've been there and it sucks, it really does.