Long before the familiar lions and cheetahs roamed the open savannas, there was a cat whose world looked very different.

Learning proper core engagement can help, but if the brunt of repeated lumbar spinal flexion takes its toll, you can happily scrap sit-ups and try many other abs exercises instead, including landmine ...

Sculpt a chiseled core with 3 bodyweight moves! Hollow body hold, L-sit, and windshield wipers deliver visible results—no gym needed.