In Chow Gar Praying Mantis Kung Fu press-up variations are great power enhancers from the physical aspect of the system.
They are serving the purpose to build power in the fingers arms and the waist. It is a great tool the generate massive relative strength which means one can be very strong compared to their own body.
The right form here is also essential. Like in all exercises of Chow Gar, it is serving the goal of functionality namely to get exceptional body skills which are suitable for fighting.