Everyone should get up from bed in Braahma muhurtham,i.e. five nazhigas (two hours) before sunrise, i.e. 4 a.m. If we sleep beyond that time, we will not only lose the merit we have, but also attract the curse of Pitrus.
During Sandhya times, taking food, enjoying sex, sleep, reading- these four are prohibited. As soon as we get up from bed, we should see auspicious objects while waking up. We should contemplate on God, Rishis and Punyatmas (holy persons). We should then go to a deserted place at least 100 feet away in east, south or north direction, keep water and soil, conceal head with cloth, face north in daytime or south in night time and pass stools silently.
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