Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to be more productive at the gym [title] Turn off notifications. [step] Any text or email you get while you're working out can wait a half hour or so until you're done. Barring an actual emergency, there's no need for you to constantly check your messages while you're exercising.

Ending1: You'll be able to pass it off as a habit. [substeps] Blocking notifications from your smartphone, social media, and email can also serve as a working reminder of activities you won't be doing during the workouts. Ending2: This means that regular, hand-delivered messages are much better for staying productive than electronic ones. [substeps] The number one rule of the gym is to turn off notifications before you leave your gym. Ending3: Turn your phone off so that it's out of reach. When a negative message comes up, delete it or put it on hold until you're done. Ending4: [substeps] Notifications are a distraction that can cause you to lose focus. Starting and stopping your routine every few minutes to actually respond can destroy the effectiveness of your workout.

Answer format: ending1/ending2/ending3/ending4