Science-backed training for women

Your program doesn't know you have a cycle.

Bloom adapts your training to your hormonal phase — so you stop fighting your biology and start building with it.

No spam. Launching in 2026. Early access members shape the product.

✦ Follicular phase
Today's phase
Late Follicular
Today's session
Heavy Compound Lower
Squat · RDL · Hip thrust
Peak strength window
↑ Push intensity PR window High carb
433
Women in the core meta-analysis
60%
Of active women are iron deficient
22
Studies powering our phase model
"Built on peer-reviewed research, not influencers."

The problem

Generic programs were built for men.

Most training advice was developed on male subjects and applied to women without testing. Your body runs on a 28-day cycle. Your program runs on a 7-day one.

↕

Sessions feel harder some weeks for no reason

That's your luteal phase. Glycogen use and recovery needs shift — your program should shift with them.

↑

You're leaving strength gains on the table

Your follicular phase is your peak window for maximal effort. Most programs don't time this deliberately.

≠

Volume thresholds were set for men

Research shows women tolerate higher relative training volumes. You're likely undertraining on standard programs.

✗

Cycle syncing content isn't always science

Most social media advice cites animal models or calendar studies. Bloom is built on hormonal-verified RCTs.

How Bloom works

Four phases.
Four different approaches to training.

Days 6–13

Follicular

Rising estrogen, peak anabolic conditions. Bloom schedules your heaviest sessions here — max strength, PRs, high intensity.

Push harder
Around day 14

Ovulatory

Strength peaks but joint laxity increases. Bloom emphasises neuromuscular warm-ups and landing mechanics.

Stay sharp
Days 15–28

Luteal

Greater fat oxidation, elevated growth hormone. Bloom shifts to moderate loads, volume, and compound work.

Build endurance
Days 1–5

Menstrual

Training is still beneficial. Bloom manages inflammation markers and adjusts for subjective readiness automatically.

Train smart

The research

Built on evidence, not trends.

Bloom's logic is built from a meta-analysis of 433 women across 22 studies — not anecdote, not animal models, not TikTok.

433

Women in the strength meta-analysis

Schönfelder et al. (2024) — the strongest available evidence on phase and maximal strength.

60%

Of active women are iron deficient

Bloom flags nutritional risk and guides dietary strategy — an area most apps completely ignore.

2–8×

Higher ACL risk for women

Bloom builds protective warm-ups into every ovulatory session automatically.

"The vast majority of exercise physiology research has been conducted exclusively on male participants. Many foundational training recommendations were derived from male-only data and extrapolated to women without direct validation."
— Female Physiology & Gym Training research meta-analysis, June 2025

Train like the research actually says you should.

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