If you itemize your deductions on Form 1040, Schedule A (PDF), Itemized Deductions, you may still be able to deduct your personal portion of mortgage interest, property taxes, and casualty losses on that schedule. There's a special rule if you use a dwelling unit as a residence and rent it for fewer than 15 days.
According to Harvard Medical School, you will burn about 240 to 356 calories per hour doing water aerobics, which is lower than the 420- to 622-calorie expenditure from participating in one hour of step aerobics at a low intensity.
Get at least 30 minutes of aerobic exercise every day. Aerobic exercise burns calories while you are doing it and keeps your metabolism elevated even after you finish. If you have a hard time fitting in 30 minutes at once, do your aerobic exercise in smaller intervals, like 5, 10, or 15 minute sessions.