Thermogenics and Weight Loss

Question:

I have a client who is desperate to lose body fat around her waist. She had a baby a few years ago by C-section, which resulted in internal bleeding. As a result of this, they had to perform a number of surgeries via the same incision. Her lower abdominals are very weak. Are there any thermogenic food sources she could consume to increase her metabolic rate even slightly? I've suggested green tea and citrus fruits when she has her mid-morning snack. I've also suggested mustard, but none of the above help since she despises the taste. Also, we've tried lower abdominal exercises to help strengthen her lower abdominals. It seems that it only really works her lower abdominals when she raises her feet off the floor and holds the contraction for a period of time. Any suggestions?

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