Background: Despite the public health importance of documenting the burden of physical inactivity and weight gain, there is a paucity of such data in Kuwait during the lockdown for Covid-19 pandemic. Therefore, this survey was designed to estimate: the burden of poor eating habits particularly binge eating habits, fluctuations in weight and its predictors among the Kuwaiti public. Methods: This cross-sectional survey was conducted from 2nd to 12th April 2020 among the general public in Kuwait. All data were collected through a social media platform (WhatsApp groups), through convenience and snowball sampling methods. The survey comprised three sections: a) demographic characteristics of respondents, b) eating habits particularly binge eating, consumption of snacks and beverages c) subjective feelings of anxiety and d) weight before and during the pandemic. All data were analyzed using SPSS (v.25). Results: There was a total of 522 valid respondents, with a mean age of 41.78 (11.75) years. There was a significant increase in weight of respondents during the quarantine (mean difference= -1.13, SD 5.39, t= -4.52, p < 0.001). Those with reporting unhealthy diets were 4.5 times more likely to report an increase in weight. Those reporting having anxiety throughout the day were 2.45 times more likely and those consuming snacks excessively were associated with 3.27 times higher odds of increase in weight than those not consuming it. Conclusions: We recommend that authorities develop a strategic plan to counter harmful effects of this pandemic on health that are originating from sedentary lifestyle, unhealthy eating patterns and psychological issues.