I read on the internet (thus potentially to be taken with a pinch of salt) that even having a single beer in the evening can cause a worsening of the second hal

I read on the internet (thus potentially to be taken with a pinch of salt) that even having a single beer in the evening can cause a worsening of the second half of your sleep. (Which is a bit weird as one might imagine the alcohol would be gone from ones system by then.) I've tried total abstinence from alcohol and it really makes an AMAZING difference to how I feel the next day. (But perhaps it's just a placebo effect, since having read that internet article... YMMV)