"Lying takes effort. When you tell the truth, you simply remember something and say it. When you lie, you consider the truth, whether or not you want to share it, decide that you don't, concoct a lie, and try to say that lie as naturally as you would the truth. Remembering all those steps is hard enough, but certainly not as hard as carrying them out in a matter of seconds. Misdirection still requires more work than truth-telling, but you don't need to figure out a believable alternative to use it. Instead, you simply need to focus the subject's attention on something else and let them concoct the lie using their own imagination. How do you actually do this? Let's consider some examples."
Aqui
Das pernas curtas...
"The sorts of lies you tell have an impact on their difficulty, but a small white lie can require as much upkeep as a hefty one. Telling your grandmother you enjoyed eating the Spanish tongue she prepared for your birthday is the sort of lie that's going to keep portions of Spanish tongue coming your way until Grandma's in a nursing home. Even then, you'll still be reminiscing about her deliciously prepared tongue with each visit. Okay, so this isn't the likeliest of scenarios but hopefully the point is clear: when you tell someone you like something to spare their feelings, it requires a lot of upkeep. Upkeep can be really difficult because it requires having a good memory."
"All of that said, here's the real takeaway: lying is a lot of work. You can often save yourself a lot of time, stress, and heartache by just telling the truth. Sometimes it sucks to be honest, and you'll probably find yourself engaged in more conflict, but ultimately you'll be able to handle that conflict better. So long as you're not making any really terrible mistakes, being honest about yourself and what you do will make your life a lot easier. This goes beyond owning up to a broken vase, but to being forthcoming about who you are, what you love, and what's important to you. The less you conceal and hide, the better things can get."
Aqui
What Lying Actually Does to Your Brain and Body Every Day: Link