so we have daily meeting to review last day's tasks and assign the current day's tasks. You will feel the pressure every day, and it's realy good for small scale R&D project. sometimes you can not finished the assighed tasks and find it will take you more than one day to finish it, you ahve to report it and sugest the scrum master to devide the task ans reassign them. some times you can finished a "heavy" task with 2 or 3 hours and you find the sassumption of the tasks is wrong. the most diffcult thing for scrum is the scrum master does not have enought experience of agile development experience.