Suggest going to the gym. Running can only be regarded as a warm-up, not a reduction. Appropriate equipment and consumption must be arranged. Don't worry about muscles affecting Shui Rou's image. Muscles can't be so easy to practice. You need to know how many men fail to save much muscle after practicing every day.
Adhere to daily exercise, but also adhere to good eating habits, every day. Diet is not a reduction, but a reasonable collocation: don't eat pork, because now pork is grown up with feed that stimulates growth; Eat less sugar and starch, which can be easily converted into fat; Reasonable supplement of protein (boiled eggs are best, two a day), to maintain physical strength, protein alone will not get fat; Eating more fish and beef will not cause too much fat, but it can ensure calories and people will be more energetic.
I wish you beauty. Health is the most important thing.