Question: ab exercises you can do at home?
Answer: Plank to Dolphin. "Plank to Dolphin is a great warm-up for the shoulders, arms, and core," says West. ... 
Push-Up. Push-ups work your abs, arms, and shoulders all at once, says West—win, win, win. ... 
Plank Tap. ... 
Forearm Side Plank With Twist. ... 
Bicycle Crunch. ... 
Plank to Downward Dog Tap. ... 
Diamond Push-Up. ... 
Lateral Plank Walk.