2. Can I eat jackfruit after fitness? Can be eaten in moderation. Physical energy consumption is too large during fitness, and water is lost to some extent. After fitness, energy should be supplemented appropriately. Jackfruit is rich in vitamins and minerals, which can alleviate the mineral loss caused by sweating, and can be eaten in moderation after fitness. However, if fitness is to lose weight, it is recommended to choose other fruits with lower calories, such as bananas, apples and purple grapes.