New grad. How to deal with Indian work culture.

It was Easter yesterday and my lead messaged me at 3pm on a Sunday cause he was still working. Dude works 12-14 hours a day and brags about it. I don't understand him. Then he just throws incredibly hard things at me to complete(which by the grace of god I've been able to do) I am sticking around because it is an incredible stepping stone for my career but on gods glory I do not want to live like this forever I feel like being punished for pushing back on work because I value working to live rather then living to work. And don't value litterally killingmyself by sacrificing sleep good diet and excersize and my wife. sorry if this came out as stressed but this is just a trend I have noticed from a lot more Indian co workers then not. Most of the time H1b. other then the work culture they are great people. But Christ that work culture feels so toxic