Goin' to the dark side?

I wonder if it is too late to take up coffee (in its warm form) at my age?
I'm so zonked... Went to bed early and tossed and turned all night! Despite the reassurances from the tenancy people, not sure what kept me up... the ususal no doubt; money, parenting issues, nursling ... the usual.
Must get a nap! MUST HAVE A NAP! Only four more hours.... please?!