Energy is Force times Distance. You're not moving (even though you're accelerating) so there's no energy expended. See Veritasium's video at 10m17s: https://y

Energy is Force times Distance. You're not moving (even though you're accelerating) so there's no energy expended. See Veritasium's video at 10m17s: https://youtu.be/XRr1kaXKBsU?t=617 https://youtu.be/XRr1kaXKBsU?t=617 He addresses that basic science makes this confusing because there's a curvature term that is usually left out of acceleration equations which balances out when you're accelerating along your curvature (e.g. against gravity), instead of along your spatial coordinates.