In this video, Jeff Cavalier from aex.com provides detailed guidance on performing 10 popular gym exercises correctly to maximize their benefits and minimize injury risks. He starts with the preacher curl, advising to lean forward and engage the lats by digging elbows into the pad to protect the biceps. For lat pull-downs, he suggests using a narrow grip to better target the lats. When doing push-ups, he recommends positioning the elbows at a 45-degree angle from the body and following a natural arc similar to a bench press. Cavalier also covers lunges, advising a backward and outward step to improve balance and reduce knee strain. For tricep extensions, he emphasizes keeping the arms angled back to maintain tension on the triceps. He also discusses the Bulgarian split squat, crunch pull-downs, face pulls, cable crossovers, and lateral raises, providing tips to enhance muscle engagement and safety. Each exercise is broken down with practical tips to ensure proper form and effectiveness.