yes very normal can get pulse rate of 91 just walking to the bike lol its not always the speed but the rythem that matters exercise hr max is 300 - age so if your 30 max hr is 270 as long as u stay in a good rythem thats whats important
QUOTE: i worked out for one min on the bike. checked haert bet is was 91 is this normal?
>>>>>>A heart beat at rest should be less than 100, if not there can be a medical problem called tachycardia and if heart rate at 60 or below at rest that is also considered a problem.
For effective heart exercise, the formula for proper heart rate is 220 minus your age and sustained for about 30 minutes. If you were on a bike for 1 minute with heart rate of 90, that probably would be about right as a warm up (for about 3 minutes) to gradually increase heart rate before sustaining a tarket heart rate based on the formula provided.
Hope this helps and if you have any other questions, you are welcome to ask. Take care.