List of Niche Blog Ideas

Every blog can be broadly classified into niche topics and ideas. From there, you can go deeper to find more niche ideas:
HEARTS Mnemonic

Health

Health divides into Mental and Physical health

Mental 

Niche blog topics under this category include psychology, counseling or particular mental disorder, disability.

Physical

It includes physical well being, food, exercise, weight gain, weight loss to name a few

Environment

all about nature, ecosystem, sustainable living, travel.

Aspirations

Includes personal and professional aspirations, hobbies, arts and science, goal achievements, business growth.

Relationships

relationship with self, society including relationships with pets, animals and environment around you.

Things, Technology

Majorly tangible stuff, things, materials however, broadly you can also include intangible matters.

Society

Includes sociology, economy, civics, and politics
further you can dive deeper on each HEARTS to find specific topic for your niche blog and develop that idea in to blogging.