If you are over 60 years old and are worried about ＿＿（26）＿＿ and falling, you may want to consider ＿＿（27）＿＿ your alcohol intake. Researchers have found that drinking one can of beer can immediately influence elderly citizens' sense of balance; they would have difficulty to lift their legs high or to ＿＿（28）＿＿ obstacles while walking. As a result, they are twice likely to hit obstacles compared with younger people. Inability to avoid obstacles usually ＿＿（29）＿＿ a higher risk of falling. So, if you are older, avoid walking under the ＿＿（30）＿＿.