Erectile dysfunction is one of the common problem affecting mostly in middle aged men. However ED can be a long term or short term or situational this can result inability to reach an erection. This type of ED is known as temporary which is caused due to stress, fatigue or due to drinking too much alcohol. Maintaining an erection up to 20 percent is considered as normal but occurring more frequently is a serious issue and one should talk to doctor. However men should take care of their health and should avoid any type of stress, drugs, drinking alcohol and even sometimes alcohol problem. So you should try out some preventive measures so that you can have a good lifestyle. Get out from your comfortable situation and do some exercises and make plan for sex when you both have time and enough energy to maintain properly. So no need to worry and do the preventive measures which is required.