Parenting

Falling awkwardly when that little is remarkably risk free (within reason) bones and joints are bendy and mild injuries heal quickly and lessons will be learned practically.

Toddlers are exploring all boundaries and this behaviour is exploring their boundaries of physical resilience.

Let them explore, let them go until they find their limit... then explain, immediately.

Of course, this requires you make sure a serious accident can't happen, so get rid of that glass coffee table etc.

Example, my son fell off his top bunk, while clambering around like a loon, hurts arm, needs a cast for a few months. Learns to use the ladder.