You might be a little nervous going through the TSA checkpoint at the airport. Did you bag your liquids correctly? Maybe you forgot to pull out your smallest electronic device. And for sure, you feel a little vulnerable there in your socks while your shoes go through the scanner. So when the TSA agent looks you up and down, you worry about what theyre thinking about youand whether they might pull you and your bags aside for further searching. If youve wondered whats going through their head, Readers Digest explains what they are sizing up with that one look. The TSA agent has been trained to notice off things about a person that might indicate guilt, and that their baggage might contain explosives or weapons.

　　The first thing that raises a red flag is aggressive behavior. Even if youre justifiably upset about a canceled or delayed flight, you need to keep your cool and remain courteous. Tamp down that anger, or you might get a little more attention than you bargained for.

　　On the other side of the coin, overly friendly passengers draw the TSA agents eye. No need to make small talkthis person is not your friend. And if youre too chatty with the agent, you may appear to be trying to disarm them. Its best to just be polite and neutral.

　　Another sign that the agent looks for? People who act nervous. You might be a nervous flyer or filled with anxiety about other aspects of your trip. So, while youre going through the checkpoint, try to avoid the indications of being aflutter: clearing your throat a lot, being pale or shaky, or being wide-eyed. How can you quell those signs? Try to meditate or visualize a pleasant space in your life that makes you feel calm.

　　Avoiding eye contact is another telltale sign. Dont be shifty-eyed; look at the agent directly when he or she is talking to you.

　　Believe it or not, baggy clothing can make an agent take a second look, because they may wonder if something is being concealed under those folds of fabric. That could inspire them to request a pat-down. Your clothes can also be a red flag if they are out of season. No, we dont mean that youre wearing last seasons runway; we mean that youre wearing a parka in summertime. It could make the agent think a weapons hidden under all that goose down.

　　Another thing that makes you appear suspicious is being drunk (and, relatedly, unruly). The time you spend cocktailing in the airport bar may actually cause an agent to request a blood alcohol test...and if you dont pass, you could be denied boarding. And even if you arent found to be tipsy or loaded, you might have drawn unwanted attention from TSA.

　　If you are carrying a lot of cash, especially if its in different denominations, you could be seen as a potential trafficker. Its best to convert your money back to American dollars before heading to the airport.

　　Be wary of bringing back coffee as a souvenir since some people use its strong scent to mask drugs from drug-sniffing dogs. Its not illegal to bring back coffee beans, but it could be one of those things that trigger a closer look from TSA.

　　The list of suspicious behaviors and appearances continues. They include transporting electronic and electrical items such as curling irons, having an intricate hairdo with pins and clips, bringing battery packs (those go in carry-on luggage only and cant be in checked bags), trying to get by with larger liquid containers than the allowed 3.4 ounces, and talking about bombs and guns while in line. It may surprise you to know that you can be arrested for joking about bombs while in the TSA line. The best advice is to be chill, dont talk other than when directly addressed, and follow all the rules to a tee.