Please choose the correct ending to complete the given sentence: Uncategorized: [header] How to build lean muscle [title] Lift weights for at least 30 minutes 3 days a week. [step] You can use machines, free weights, trx bands, weightlifting classes or a combination of these choices. [substeps] Never go into weightlifting blind.

Ending1: When lifting weights, you pay attention to what you are doing, take your form to the gym or a personal trainer, even your food choices. [title] Do lighter weights on days when you don't feel tired. Ending2: Quit weights at least one day or two before work if you want to. Do sets, simple and intense exercises or at least 150 repetitions per session. Ending3: It requires correct posture and positioning to correctly target muscle fibers. Take an intro to weightlifting class, buy some sessions with a personal trainer or take classes to learn the basics. Ending4: If you're the type to stick with a workout regimen, choose ones with a lot of repetition. This will reduce the time and effort that going into bodybuilding an exercise requires.

Answer format: ending1/ending2/ending3/ending4