During the lockdown people were confined at home to obviate further transmission of coronavirus in the community under the strict social restrictions that induced disturbance in circadian driven sleep-wake cycle and imposed the adverse effects on associated lifestyle behavior. This study was a cross-sectional questionnaire-based survey conducted in Pakistan. The survey was conducted from March 13 to 20 March 2020 by circulating the questionnaire form on face-book and G-mail. Form consist on 15 questions related to sleep, meal (first meal, lunch, and dinner time) and screen time (digital media, TV watching time before and during lockdown) which took hardly 5 to 10 minute to complete. Questions related to a sleep disorder, psychiatric diagnosis, drugs' effect on the sleep-wake pattern, and pregnant women are omitted from the study. Total 1144 participants having an age greater than 18 years were assessed through different parameters before and during the lockdown. Survey results indicated that sleep-wake time, three meals time was significantly impede during lockdown which was prominently observed in young people of the age group 19-26 followed by age group of 26-32. The use of digital media was increased in all age groups but more pronounced in males. During the lockdown, first meal and second mealtime are earlier in males as compared to females while dinner time is later in males compared to females before lockdown and same dinner time for both males and females was reported during the lockdown. Findings of this study concluded that complete lockdown generated a discord condition with social and natural cues had raised social jetlag with impeded sleep-wake, mealtime, and excess exposure to screen amid the population. All these variables' effects show differentiation based on gender and age of people. Long and last these findings may aid the people to prepare better for tackling sleep health and related behavior issues during further events (as current covid-19) in future 
 Keywords: covid-19 lockdown, sleep onset time, wake-up time, meal timings, digital media exposure.