What these actors in these suits have to endure is BEYOND what a normal individual could handle. Toho Studios is THE BEST not only at making miniatures but giant monster movies. I'm sorry folks i'm "old school" i'd MUCH rather see this then CGI.
I wish we here in the UK could buy all the Godzilla films produced by TOHO and in English dub version! But can't even get many of them on amazon here and they do the most. I loved the older style of Godzilla films before the bad one in 1998 that made him look ugly ( damn Hollywood idea's ) These film makers and actors are Gods indeed to produce such amazing work.
Those guys must've been exhausted after filming. Ya it isn't quite like the original one where the suit nearly killed the guy and weighed over 300lbs, but it doesn't look easy. I read somewhere that there was somewhere along the lines of a gallon of sweat that needed to be dumped out of the suit between takes. Thing must've smelt putrid.
They have a little breathing thing In suit so they can get oxygen plus I think there was AC that was like 60 degrees Fahrenheit, you would still get tired for sure, and 100 Kgs Is 220.462 Lbs🌝