In the efforts to prevent spread of the COVID-19, Denmark implemented several restrictions in the spring of 2020. One of these restrictions included a national lockdown in March 2020, with the introduction of online education and closure of workspaces, which meant that many Danes either had to work from home or were sent home without work. This significantly changed everyday life and affected our eating and physical activity habits. The National Food Institute has collected data in March and April 2020 during the first wave of COVID-19 among 1.346 Danes aged 18-651 to shed a light on the effect of the lockdown on adult Danes’ dietary and physical activity habits.