The purpose of BMJ Best Practice is to help get evidence into practice.

We use GRADE to ensure that we use the highest quality evidence. GRADE helps us to assess evidence for risk of bias, inconsistency, indirectness, imprecision, and the degree to which it may be subject to publication bias.

To find out what all these things mean, please do listen to this podcast with Dr Anna Ellis, Head of Editorial at BMJ Digital Health.

Competing interests: KW and AE work for BMJ.

Tremor is an involuntary oscillatory and rhythmic movement of a body part. It commonly affects the upper extremities but can also affect the head, chin, voice, or legs.

Tremor may impair activities of daily living or occupation, and may lead to embarrassment and social withdrawal. To find out how to diagnose and manage patients, please do listen to this podcast with Camilla Kilbane, who is an Associate Professor of Neurology, Case Western Reserve University.

COI: CK has served as a consultant for Medtronic, including participation on the Data Safety Monitoring Board for the ADAPT-PD trial. CK has participated in the speakers bureau for Teva Pharmaceuticals and has served as an expert witness in one legal case.

Hypertension is a common disorder that affects a large proportion of the community. It is usually asymptomatic and is detected on routine examination or after the occurrence of a complication such as heart attack or stroke. To find out how to diagnose and manage patients, please do listen to this podcast with Greg Lip, Price-Evans Professor of Cardiovascular Medicine, University of Liverpool.

For more on hypertension, visit BMJ Best Practice.

COI: GL is a consultant and speaker for BMS/Pfizer, Boehringer Ingelheim, Anthos, and Huawei. No fees are received personally.

This podcast is an interview with Dr Jing Ouyang. He is Co-Founder of Patchwork Health, Doctor, Podcaster and Healthtech Advisor. The interview covers a range of topics including:

• Workforce management and flexible careers and how clinical decision support can help

• How best to learn from podcasts and

• Healthtech

COI: JO is co-founder of and retains shares in Patchwork Health, where he previously served as COO and CGO. BMJ is an investor in Patchwork Health. JO also hosts the "Out of Programme" podcast. All views expressed are his own.

According to the WHO, over 200,000 people die from drowning globally every year. So it is vital that we get the diagnosis and management of this condition right.

To find out how to prevent and manage drowning, please do have a listen to this BMJ Best Practice podcast interview with Dr David Szpilman, Medical Director of the Brazilian Lifesaving Society and Co-founder of the International Drowning Researcher's Alliance.

For more on drowning, visit BMJ Best Practice.

Competing interests: DS is an author of references cited in the BMJ Best Practice topic.

Traveller's diarrhoea is common. But it is difficult to put a percentage on it as a lot depends on lots of different factors. However, we do know that traveller's diarrhoea can be serious and can cause complications - from lactose intolerance to irritable bowl syndrome.

To find out more, please have a listen to this podcast with Daniel Leung, Professor at the Division of Infectious Diseases, Dr Thomas D. Rees and Natalie B. Rees Presidential Endowed Chair in Global Medicine University of Utah School of Medicine.

For more on traveller's diarrhoea, visit BMJ Best Practice.

Competing interests: DTL receives authorship royalties from UpToDate, Inc, for a chapter on travel medicine; is an author of upcoming chapters on traveller's diarrhoea for the US CDC Yellow Book; is the past president of the American Committee on Clinical Tropical Medicine and Travelers' Health - Clinical Group within the American Society of Tropical Medicine and Hygiene; and is an author of some of the references cited in this topic.