NB! It seems this console command is not compatible with CS2.
Command Profile

SV_DZ_PLAYER_SPAWN_HEALTH

CS:GO

This command sets the amount of health that players spawn with in Danger Zone. Default is 120, which is also the default maximum amount of health players can have.

Syntax
sv_dz_player_spawn_health [Amount]

Description

This command sets the amount of health that players spawn with in Danger Zone. Default is 120, which is also the default maximum amount of health players can have.

Syntax And Arguments

sv_dz_player_spawn_health [Amount]
Amount The amount of health that players should spawn with.