Researchers from the Centre for Nutrition, Exercise and Metabolism at the University of Bath examined the effect of broken sleep and morning coffee across a range of metabolic markets.
Their work, published in the British Journal of Nutrition, shows that one night of poor sleep had a limited impact on metabolism, but drinking coffee could have a negative effect on blood glucose control.
On another occasion, they experienced a disrupted night of sleep – being woken up for five minutes each hour – and were given a sugar drink in the morning.
The third test involved participants experiencing the same sleep disruption but being given a strong black coffee 30 minutes before consuming the sugary drink.
Blood samples from participants were taken following the glucose drink, which mirrored the calories of a typical breakfast, in each experiment.
Results showed that one night of disrupted sleep did not worsen the participants’ blood glucose responses at breakfast when compared to a normal night of sleep.