This invention relates to a non-therapeutic use of an edible composition which provides an effect on a feeling in a healthy adult consumer which is selected from the group consisting of: a) increased energy； b) an increase in certain cognitive functions, selected from the list consisting of sustained attention, faster reaction times, and information processing； c) increased quality of sleep； and d) increased feelings of well-being or happiness wherein the composition is a food or food supplement comprising an egg lysozyme hydrolysate with a Trp/LNAA ratio greater than 0.15 and which provides 20 to 50 mg Trp per dose such that when administered twice daily the consumer receives 70 mg per day for a chronic period of time which is at least 19 days. The technical problem faced by the invention is that high dosage of Trp-containing protein hydrolysates has an unpleasant taste and the solution presented is the discovery of a lower dosage which addresses the problem of taste, but still achieves the promised benefits.
