I have heard someone said that always conscious tighten abdominal muscles would help me reduce abdominal fat.
Is that true?
Does tightening abdominal muscles all the time not harm my body?
If 2 is false , when and what situation I can tighten my abdominal muscles?
Because I don't like spend time to do real exercise, the situations when I would do this activity are when I:
Sit in front of computer
Walk or ride bike (Does walking conflict with Tightening abdominal muscles?)
Eating? (I don't think it is safe while eating, or it force me eat less? I also see some articles say Tighten abdominal muscles would improve the digestive function)
Are above situations fine to do such exercise?