One of the most common knee injuries is an anterior cruciate ligament (ACL) sprain or tear. Partial tears of the anterior cruciate ligament are rare; most ACL injuries are complete or near complete tears.
Complete 4 rounds of the circuit using a challenging weight (i., you can complete 8 reps, but couldn’t get to 10 if you wanted). If you finish each set feeling like you could keep going, then increase the weight. (Ways To Burn Belly Fat Fast)