Sports Health & Safety — Kindle Category Opportunity
Competition snapshot for the Health, Fitness & Dieting best-seller list, ease-of-entry score 15.0/100.
Category metrics
Score
15.0
Median reviews
68.5
Weak share (top 20)
30%
Median price
$9.99
Median star rating
4.6
Books scanned
50
Worth writing in?
Sports Health & Safety sits below our demand gate: 30% of the top 20 is under-reviewed, but overall reader activity is thin too. It can be a quiet corner to build in slowly — validate demand with keyword lookups before committing a series. Ease-of-entry score 15.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on AmazonNo breakout books in this category.
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| exercises for seniors | 6 | 180 |
| seniors over 60 | 3 | 122 |
| strength training | 4 | 114 |
| tai chi | 5 | 102 |
| move with confidence | 2 | 81 |
| complete guide | 2 | 78 |
| core exercises | 2 | 77 |
| solo training the martial | 2 | 77 |
| training the martial artist | 2 | 77 |
| video tutorials | 2 | 75 |
| 10 minute | 2 | 74 |
| gentle seated | 2 | 74 |
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Check the keywords before you write
Category scores show where entry is easiest; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
After you publish: why aren't readers buying?
Category research picks the direction; review diagnosis reads the readers. The same platform clusters a book's critical reviews into severity-ranked root causes, each anchored to verbatim quotes — see it applied to a full narrative-history title.
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.