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You don’t need hours in the gym to see real results—science and trainers agree that short, focused sessions can build strength, burn fat, and improve endurance. By using compound movements, supersets, ...

Add Yahoo as a preferred source to see more of our stories on Google. Looking for a quick ab workout to fire up your core? This seven-minute intense ab challenge targets your lower abs with no ...

You'll need better moves to build a functional core. Here’s how you can upgrade your workouts.

Instructions: For each move, perform as many reps as indicated. Continue to the next move. After you've completed all three moves, rest for 30 seconds, then you have the option to repeat the ...