My favorite spot on my favorite couch with an accompanying gin and tonic.  

Seems like my lap time go down with the first G&T and from there times begin suffer somewhat.  It helps to have minimum distractions during this period (wife making comments or asking questions etc).  Not seeing Phil, TSSDK, or any one of a large number of other racers (you know who you are) who regularly use my face to mop the track also helps.