Q I wonder if I am suffering with burnout. I used to be really enthusiastic about my job, but I now find it hard to get out of bed in the morning. I spend all day wishing for five o’clock, but then when I get home, I’m fretting that I’ve made a mistake or forgot to do something I should have done.

Catherine, 35

A What you are describing sounds very much like burnout, which is increasingly common in today’s fast paced work environment. Typically you struggle to find motivation. A job you previously enjoyed seems too much, with even simple tasks appearing difficult, but then you spend all your free time worrying about work. It may be that you are overdue a holiday, however if it is affecting your mood and sleep, you might wish to talk to your GP about how you are feeling and perhaps consider a period of sick leave. It would also be worth addressing the issue with your employer to see if there are any adjustments they can make at work that might help you.

Q I’ve always been into fitness and looking after myself, and I recently bought a sports watch that tells you your pulse. I wear it all the time and was worried when I saw that some of my readings at night were only 40. I thought your pulse had to be at least 60.

Suzie, 50

A A normal resting pulse, which is when you are not doing any activity, is usually between 60 and 100 beats a minute. It is often lower in elite athletes and it is normal for it to drop below 60 in your sleep without any risk of harm. However, if you notice that your pulse is low and you feel dizzy or unwell, it would be worth discussing this with your routine GP. They will initially organise a reading of your heart trace (ECG) and if there is anything abnormal on this, you may be referred to a heart specialist who will organise a 24 hour reading. However a low resting pulse on its own without any symptoms probably reflects your level of fitness.

If you have a question for Dr Zak, you can email him at askdoctorzak@gmail.com, see doctorzak.co.uk or find him on Twitter @AskDoctorZak

Dr Uddin’s advice is provided in good faith and in accordance with currently accepted evidence. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. You should always seek the advice of a GP, or other qualified health provider, regarding a medical condition.