The best program is the one you'll actually finish. That sounds like a cliché, and it's still the most useful filter there is. After that, a handful of things separate a well-built program from a list of hard workouts.
Does it match your goal?
Be specific about what you want from the next three months. "Get fitter" is fine, but "run a sub-25 5km and keep my squat" or "prepare for a hybrid race in June" points you to very different programs. A strength program with a bit of conditioning and a conditioning program with a bit of strength look similar on the sales page and feel completely different by week six.
Read the sample week if there is one. If you're training for a hybrid race and the sample week has one short run in it, it isn't built for you, however good the reviews are.
How long the sessions really take
A session listed as 45 minutes of training is often 60 to 70 minutes once you add a proper warm-up, setting up equipment and a bit of mobility at the end. Check whether the program's times include the warm-up. If it doesn't say, assume they don't.
Then compare it with your actual week, not your best week. If you can reliably train four times and occasionally five, choose a four-day program with an optional extra session, not a five-day one you'll keep half-finishing.
Look for structure you can see
A good program shows you the plan. Phases with names and purposes (a base block, a build block, a test week), weeks that progress in a way you can follow, and a reason for each session. You should be able to look at week 7 and see how it relates to week 3.
Specifically, look for:
- progression that's written down, such as loads or percentages rising across a block, or the same interval session getting longer or faster;
- a lighter week every three to five weeks;
- a test or benchmark at the start and end, so you can see whether it worked;
- scaling options for the movements you can't do yet, and a reduced version for weeks when life gets in the way.
Random hard workouts, different every day with no thread between them, can be fun and will make you tired. They won't reliably make you better at anything in particular.
Fixed block or ongoing track?
Programs come in two broad shapes. A fixed block has a start and an end, say 8 or 12 weeks, and builds towards a goal or a test. An ongoing track carries on week after week, usually released a week at a time, and you join wherever it currently is.
Neither is better. Fixed blocks suit a specific goal or an event date. Ongoing tracks suit people who want to train well all year without choosing a new plan every quarter, and they're often where a coach's community trains together. It's worth knowing which you're buying.
Who wrote it, and can you ask them?
Check who the coach is and whether their own athletes look like you. A program written for competitive athletes training twice a day won't translate to three sessions around a full-time job just by doing less of it. And find out what happens when you have a question. A program with a coach who answers, or a group following it alongside you, is far easier to stick to than a PDF.
Questions worth asking before you buy
If you can contact the coach, a few questions tell you a lot. How long does a typical session take, warm-up included? What happens if I miss a week? Is there a version for a home gym or limited kit? How do I know if I'm progressing? Can I see a full week before I pay?
A good coach answers all of those easily. Vague answers, or "just trust the process", usually mean the structure isn't really there. And for paid programs, check how cancelling works before you start rather than when you want to stop.
Give it long enough
Once you've chosen, stick with it for at least eight to twelve weeks before judging it. The first few weeks of almost any new program feel either too easy or too hard while your body adjusts, and the real results show up later in the block. Hopping between programs every month is one of the commonest reasons people don't see progress.
If you also go to classes at a gym, check the two don't clash. A program that assumes you're fresh for heavy squats on Monday won't work if Monday is also your gym's leg-heavy class day. Either swap days or count the class as one of the program's sessions.
Red flags
Promises of dramatic results in a few weeks. No rest or easier weeks, ever. Every session at maximum effort. No way to scale. No mention of progression at all. And, a smaller one: a price that only makes sense if you never cancel. If a program can't show you its structure before you pay, be wary.
On Fiz, programs are laid out by week and day, so you can see the shape before you start, and coaches publish both free and paid ones. Browse programs, or read how to follow a program in the app. If you're a coach thinking about publishing your own, Fiz for coaches covers how that works. And if you would rather have a plan built around your own goal and training days, Smart Programs in Fiz Pro plan the whole block for you.