Suck it in!
Turns out your mother was right (once again). For all the times we were told to sit up straight, we could have strengthened our backs and developed bikini worthy abs if we had paid attention. Practicing good posture is an easy way to strengthen your abs and entire core area and tighten that gut. For great posture: stand straight and hold your head and neck back, lift your chest up, keep your shoulders back, slightly pull your pelvis forward and breath in deep from your lower abdominals. Engage your abdominals throughout the day in everything you do.
No, seriously! I’ve been doing this for a couple of weeks, and I’ve lost inches around my waist and abdomen! Suck in your stomach. Focus on sucking in the lower abdominals (around your navel, in and up) as hard and as deep as you can for 15 to 60 seconds. Then relax and repeat for at least five minutes a day. Pretty basic, but it works. The longer and harder you hold it, the better your results.
For even better results, suck in your abdominals all day long whenever you think about it: while you’re driving in your car, while doing cardio, while sitting at your desk, while eating meals — just whenever you think about it. It will flatten your tummy, strengthen your back, improve your posture, and improve your breathing.
Be aware, though, that sucking in your gut won’t help you lose weight — it just helps strengthen your transverse abdominus muscles. To lose that belly fat, you need to stick with the diet and cardio.