<i>&gt; I started forcing myself to eat breakfast</i><p>I tried that when I was having lethargy problems mid-morning, but my digestive system doesn&#x27;t seem to switch on until a while after waking up and if I consume anything more solid than milk before it tells me it is ready I get unpleasant indigestion feelings.<p>I tend to get hungry and have my first food at ~1030 or a little before. The exception is the days I have a long run into work (a 7.5-to-10K slow run, instead of the usual 2ish Km walk) - I want food as soon as I&#x27;ve showered in that case.<p>Exercise before work has itself cured the lethargy problem it would seem and it doesn&#x27;t need to be as strenuous as a 7+K run. Just the difference between the old routine of cycling in, to doing a few situps &amp; dips before getting dressed and briskly walking in, seems enough to make a marked improvement even into the late afternoon.