The phrase "digestive fire" refers to the strength and efficiency of our digestive system. It signifies how well our body breaks down food, absorbs nutrients, and eliminates waste. Full definition
To increase digestive fire and stay in balance, consume warm liquids and add heating spices such as ginger and a dash of cayenne to create a spice water to sip all day long. (fivepillarsyoga.com)
On a more subtle level, the abdominal lock strengthens digestive fire. (sonima.com)
This can take some practice, but it is No. 1 in preserving a strong digestive fire. (mindbodygreen.com)