Do you lose mana after upkeep?

Could you please clarify for me? Do individuals lose mana following the completion of upkeep in this context? I'm trying to understand the mechanics involved and how it impacts the overall gameplay or financial system. Could you elaborate on this point and provide any additional insights you may have? I'm particularly interested in how this affects strategic decisions and long-term planning within the cryptocurrency or financial sphere. Thank you for your assistance in helping me grasp this complex concept.