TRT community practice

Blast and Cruise

Alternating between a blast (supraphysiological testosterone dose for 8–16 weeks) and a cruise (return to TRT dose indefinitely). Avoids the PCT phase entirely. Common among experienced TRT users and advanced bodybuilders who do not intend to discontinue testosterone.

Duration

—

Steps

2

Total Weeks

16

Route

IM

Protocols

2

Source

community practice

Protocol Timeline

Step Weeks Dose Compound Note
1 16 300 mg Testosterone Cypionate 300-500mg/week split into 2 injections. 12-16 weeks. First cycle should be testosterone-only.
1 0 100 mg Testosterone Cypionate 100-200mg/week (TRT dose). Ongoing between blasts.

Rationale

Blast phase: 300–600mg/week test for 8–16 weeks. Cruise phase: return to TRT dose (100–150mg/week) until next blast. Run bloodwork (CBC, lipids, liver, PSA) at end of every blast before cruising. No PCT — this is a lifestyle protocol, not a cycle.

Compounds Used

Testosterone Cypionate

testosterone_cypionate · primary

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Related Tools

Medication Level Plotter

Simulate blood levels for this regimen

Dose Calculator

Calculate reconstitution and draw volumes

Split Dose Calculator

Divide weekly totals into multiple injections

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Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.

Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.