Funfitt - Fitness from Susana Yábar 10-day arm challenge to firm and eliminate fat Posted: December 18, 2025 | Last updated: June 12, 2026 Join this simple arm challenge to firm and eliminate fat.

Watch the challenge of attempting a backflip without using an arm swing and see how technique, balance, and timing affect the result. This gymnastics challenge highlights the skill, control, and ...