-- By ingesting high-fat meals in the evening, you induce "metabolic inflexibility" – effectively disrupting metabolic rate and increasing fat storage, risk of obesity, elevated insulin levels and a reduction in insulin sensitivity.
-- By ingesting high-fat meals in the morning and afternoon, you increase metabolic flexibility – setting the metabolism for higher fat oxidation throughout the day. As LPL enzyme (splits up circulating fatty acids and makes them available for storage) is higher in muscle in the AM, fats are more likely to be burned off as energy or stored as lipid droplets within the muscle (IMTG).
-- By ingesting high-carb meals in the morning, the same “metabolic inflexibility” occurred, and the metabolism is fixed towards glucose oxidation instead of fat oxidation. This also increases fat storage from meals eaten during the day, and higher-fat meals eaten in the evening in particular.
-- By ingesting high-carb meals in the evening, you get a bump in the natural leptin signal (occurring 3-6hrs after going to sleep), essentially increasing fat burning through the night and the rest of the following day.
-- Insulin sensitivity is higher in all cells early in the day, including fat cells, but decreases towards the afternoon and evening, thus partitioning carbs ingested at this time more efficiently into muscle vs. fat. This is obviously further improved by training the muscle that day.
-- Eating carbs will increase the feel-good neurotransmitter serotonin and make you sleepy. What better time to have your carbs than a couple of hours before bedtime so you can fall into a deeper, higher-quality sleep